Document And Entity Information [Abstract] Document Type Document Type Document Quarterly Report Document Transition Report Document Period End Date Document Period End Date Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Central Index Key Entity Central Index Key Amendment Flag Amendment Flag Consolidated Income Statements Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Revenue from Contract with Customer, Excluding Assessed Tax Service revenue Costs and Expenses [Abstract] Costs and expenses: Technology and academic services. Technology and Academic Services Technology and academic services Counseling services and support. Counseling Services and Support Counseling services and support Marketing Expense Marketing and communication General and Administrative Expense General and administrative Amortization of Intangible Assets Amortization of intangible assets Costs and Expenses Total costs and expenses Operating Income (Loss) Operating income Interest Expense Interest expense Investment Income, Nonoperating Investment interest and other Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before income taxes Income Tax Expense (Benefit) Income tax expense Net income Net Income Per Common Share Earnings per share: Earnings Per Share, Basic Basic income per share Earnings Per Share, Diluted Diluted income per share Weighted Average Number of Shares Outstanding, Basic Basic weighted average shares outstanding Weighted Average Number of Shares Outstanding, Diluted Diluted weighted average shares outstanding Diluted weighted average shares outstanding Consolidated Balance Sheets Assets [Abstract] ASSETS: Assets, Current [Abstract] Current assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Debt Securities, Available-for-sale, Current Investments - Available-for-sale Investments Accounts Receivable, Net, Current Accounts receivable, net Income Taxes Receivable, Current Income tax receivable Other Assets, Current Other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Operating Lease, Right-of-Use Asset Right-of-use assets Intangible Assets, Net (Excluding Goodwill) Amortizable intangible assets, net Goodwill Goodwill Other Assets, Noncurrent Other assets Assets Total assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY: Liabilities, Current [Abstract] Current liabilities Accounts Payable, Current Accounts payable Employee-related Liabilities, Current Accrued compensation and benefits Accrued Liabilities, Current Accrued liabilities Accrued Income Taxes, Current Income taxes payable Contract with Customer, Liability, Current Deferred revenue Operating Lease, Liability, Current Current portion of lease liability Liabilities, Current Total current liabilities Deferred Income Tax Liabilities, Net Deferred income taxes, noncurrent Other Liabilities, Noncurrent Other long-term liability Operating Lease, Liability, Noncurrent Lease liability, less current portion Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity Common Stock, Value, Issued Common stock, $0.01 par value, 100,000 shares authorized; 53,970 and 53,830 shares issued and 30,092 and 31,058 shares outstanding at September 30, 2023 and December 31, 2022, respectively Treasury Stock, Common, Value Treasury stock, at cost, 23,878 and 22,772 shares of common stock at September 30, 2023 and December 31, 2022, respectively Additional Paid in Capital, Common Stock Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Retained Earnings (Accumulated Deficit) Retained earnings Stockholders' Equity Attributable to Parent Ending Balance Beginning Balance Total stockholders' equity Stockholders equity Liabilities and Equity Total liabilities and stockholders' equity Preferred Stock, Par or Stated Value Per Share Preferred stock, par value Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Treasury Stock, Common, Shares Ending Balance, treasury shares Beginning Balance, treasury shares Treasury stock, common shares Consolidated Statements of Other Comprehensive Income Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Unrealized gains (losses) on available-for-sale securities, net of taxes of $30 and $8 for the three months ended September 30, 2023 and 2022, respectively, and $19 and $131 for the nine months ended September 30, 2023 and 2022, respectively Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income Comprehensive income Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Unrealized gains (losses) on available for sale securities, taxes Statement of Stockholders' Equity Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Additional Paid-in Capital Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Loss Retained Earnings [Member] Retained Earnings Treasury Stock, Common [Member] Treasury stock, common Shares, Issued Ending Balance ( In shares ) Beginning Balance ( In Shares) Treasury Stock, Value, Acquired, Cost Method Common stock purchased for treasury Common stock acquired, cost Treasury Stock, Shares, Acquired Common stock acquired, shares Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Restricted shares forfeited, shares Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Share-based compensation Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Share-based compensation, shares Shares issued under plan Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows provided by operating activities: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Allocated Share-based Compensation Expense Share-based compensation Share-based compensation expense The current period expense charged against earnings on long-lived, physical assets (excluding intangible assets) not used in production to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Depreciation and Amortization, Excluding Intangible Assets Depreciation and amortization Deferred Income Taxes and Tax Credits Deferred income taxes Other Noncash Income (Expense) Other, including fixed asset impairments Increase (Decrease) in Operating Capital [Abstract] Changes in assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable from university partners Increase (Decrease) in Prepaid Expense and Other Assets Other assets The increase (decrease) in operating lease liabilities recognized in exchange for right-of-use assets. Increase (Decrease) In Operating Lease Liabilities Recognized In Exchange For Right Of Use Assets Right-of-use assets and lease liabilities Increase (Decrease) in Accounts Payable, Trade Accounts payable Increase (Decrease) in Accrued Liabilities Accrued liabilities Increase (Decrease) in Income Taxes Payable Income taxes receivable/payable Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable excluding student deposits. Increase (Decrease) in Contract with Customer, Liability, Excluding Student Deposits Deferred revenue Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows used in investing activities: Payments to Acquire Productive Assets Capital expenditures The cash outflow associated with the internal development or modification of education resources that qualify for capitalization. Payments To Develop Education Resources Additions of amortizable content Payments to Acquire Marketable Securities Purchases of investments Proceeds from Sale and Maturity of Marketable Securities Proceeds from sale or maturity of investments Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows used in financing activities: Payments for Repurchase of Common Stock Repurchase of common shares and shares withheld in lieu of income taxes Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net decrease in cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents and restricted cash, end of period Cash and cash equivalents and restricted cash, beginning of period Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for interest Income Taxes Paid Cash paid for income taxes Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Supplemental disclosure of non-cash investing and financing activities Capital Expenditures Incurred but Not yet Paid Purchases of property and equipment included in accounts payable Right-of-Use Asset Obtained in Exchange for Operating Lease Liability ROU Asset and Liability recognition Future cash outflow to pay for excise tax on treasury stock repurchases. Excise Tax, Treasury Stock Repurchases Excise tax on treasury stock repurchases Nature of Business Nature of Operations [Text Block] Nature of Business Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Investments Earnings Per Share [Text Block] Net Income Per Common Share Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Property and Equipment Amortizable Intangible Assets Intangible Assets Disclosure [Text Block] Amortizable Intangible Assets Leases Lessee, Operating Leases [Text Block] Leases Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Share-Based Compensation Equity Transactions Treasury Stock [Text Block] Treasury Stock Related Party Transactions Related Party Transactions Disclosure [Text Block] Related Party Transactions Consolidation, Policy [Policy Text Block] Principles of Consolidation Unaudited interim financial information. Unaudited Interim Financial Information [Policy Text Block] Unaudited Interim Financial Information Investment, Policy [Policy Text Block] Investments Disclosure of accounting policy for secured note receivable. Secured Note Receivable [Policy Text Block] Arrangements with GCU Internally developed software and technology. Internally Developed Technology [Policy Text Block] Internally Developed Software The entire policy pertaining to capitalized content development. Capitalized Content Development [Policy Text Block] Capitalized Content Development Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Long-Lived Assets Lessee, Leases [Policy Text Block] Leases Business Combinations Policy [Policy Text Block] Business Combinations Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Goodwill and Amortizable Intangible Assets Share-based Compensation, Option and Incentive Plans, Director Policy [Policy Text Block] Share-Based Compensation Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments Revenue from Contract with Customer [Policy Text Block] Revenue Recognition Credit Loss, Financial Instrument [Policy Text Block] Allowance for Credit Losses Technical and academic services. Technical and Academic Services [Policy Text Block] Technology and Academic Services Counseling services and support. Counseling Services and Support [Policy Text Block] Counseling Services and Support Marketing and communication. Marketing And Communication [Policy Text Block] Marketing and Communication Selling, General and Administrative Expenses, Policy [Policy Text Block] General and Administrative Commitments and Contingencies, Policy [Policy Text Block] Commitments and Contingencies Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentration of Credit Risk Use of Estimates, Policy [Policy Text Block] Use of Estimates Segment Reporting, Policy [Policy Text Block] Segment Information New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of reconciliation of available-for-sale investments from cost basis to fair value Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of available-for-sale securities maturities Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of weighted average number of common shares outstanding Property, Plant and Equipment [Table Text Block] Schedule of property and equipment Schedule of Finite-Lived Intangible Assets [Table Text Block] Summary of amortizable intangible assets Finite-lived Intangible Assets Amortization Expense [Table Text Block] Schedule of amortization expense for university partner relationships and trade names Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of future payment obligations with respect to operating leases Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of activity related to restricted stock granted under company's incentive plan Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of share-based compensation expense Nature Of Operations [Table] Nature Of Operations [Table] Nature Of Operations [Table] Legal Entity [Axis] Entity [Domain] Grand Canyon University. Grand Canyon University [Member] Grand Canyon University Nature Of Operations [Line Items] Nature Of Operations [Line Items] Nature Of Operations Number of online and on ground colleges offering graduate and undergraduate degrees within the university. Number Of Colleges Number of colleges operated The number of off-campus classroom and laboratory sites. Number of Off-Campus Classroom and Laboratory Sites Number of off-campus classroom and laboratory sites Represents the number of universities served by the entity. Number Of University Service Partners Number of university partners Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Master services agreement. Master Services Agreement [Member] Master Services Agreement Disposal Group Name [Axis] Disposal Group Name [Domain] Range [Axis] Range [Domain] Minimum [Member] Minimum Maximum [Member] Maximum Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Computer Software, Intangible Asset [Member] Computer Software Information pertaining to capitalized content development. Capitalized Content Development Information pertaining to university partner relationship finite-lived intangible assets. University partner relationships Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Revenue Benchmark Concentration Risk Type [Axis] Concentration Risk Type [Domain] Customer Concentration Risk Customer [Axis] Customer [Domain] Summary of significant accounting policies. Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies Purchase price of acquired assets. Purchase Price Of Acquired Assets Purchase price of assets Percentage of tuition and fee revenue used for closing of purchase agreement. Percentage of tuition and fee revenue used for closing of purchase agreement Percentage of tuition and fee revenue used for closing of purchase agreement Finite-Lived Intangible Asset, Useful Life Estimated average useful life Number of Operating Segments Number of operating segments Number of Reporting Units Number of reporting units Unbilled Contracts Receivable Unbilled revenue The term of contracts to provide goods or services to customers. Term Of Contracts With Customers Initial contract terms of service agreements Allowance for Doubtful Accounts Receivable, Write-offs Amounts written off Allowance for Doubtful Accounts Receivable Allowance for doubtful accounts Cash, Uninsured Amount Cash in excess of FDIC insured limits Concentration Risk, Percentage Concentration risk percentage Debt Securities, Available-for-sale [Table] Financial Instrument [Axis] Financial Instruments [Domain] Corporate bonds Commercial paper US Government Agencies Short-Term Debt Securities [Member] Agency bonds Debt Securities, Available-for-sale [Line Items] Investments Debt Securities, Available-for-sale [Abstract] Available-for-sale investments Debt Securities, Available-for-sale, Amortized Cost Adjusted Cost Debt Securities, Available-for-sale, Unrealized Loss Gross Unrealized (Losses) Debt Securities, Available-for-sale Estimated Fair Value Total Debt Securities, Available-for-sale, Unrealized Gain (Loss) Net unrealized loss on available-for-sale debt securities Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Remainder of Fiscal Year 2023 Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One 2024 Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year Two 2025 Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year Three 2026 Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year Four 2027 Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Denominator: Weighted Average Number Diluted Shares Outstanding Adjustment Effect of dilutive stock options and restricted stock Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Contracts conveying rights, but not obligations, to buy or sell a specific quantity of stock at a specified price during a specified period (an American option) or at a specified date (a European option) and other antidilutive restricted stock awards. Stock Option And Restricted Stock Awards [Member] Stock Option And Restricted Stock Awards Restricted Stock Grants [Member] Restricted Stock Grants Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Stock awards outstanding excluded from the calculation of diluted earnings Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Land [Member] Land Land Improvements [Member] Land Improvements Buildings [Member] Buildings Buildings and Leasehold Improvements [Member] Buildings and Leasehold Improvements Computer Equipment [Member] Computer Equipment Furniture, Fixtures and Equipment [Member] Furniture, Fixtures and Equipment Internally Developed Software [Member] Internally Developed Software Construction in Progress [Member] Construction in Progress Property, Plant and Equipment [Line Items] Property and Equipment Property, Plant and Equipment, Gross Property and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less accumulated depreciation and amortization Schedule of Finite-Lived Intangible Assets [Table] Trade names Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Represents information relating to Orbis Education Services, LLC . Orbis Education Finite-Lived Intangible Assets [Line Items] Intangible Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Intangible assets Finite-Lived Intangible Assets, Gross Gross Carrying Amount Finite-Lived Intangible Assets, Accumulated Amortization Accumulated Amortization Finite-Lived Intangible Assets, Net Net Carrying Amount Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Amortization expense Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2023 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2024 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2025 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2026 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2027 Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Finite-Lived Intangible Asset, Expected Amortization, after Year Four Thereafter Lessee, Lease, Description [Table] Lessee, Lease, Description [Line Items] Leases Lessee, Operating Lease, Term of Contract Term of operating leases Lessee, Operating Lease, Existence of Option to Extend [true false] Operating Lease, Cost Operating lease costs The amount of noncancelable operating lease commitments not yet commenced as of the reporting date. Lessee, Operating Lease, Lease Not Yet Commenced, Commitment Amount Non-cancelable operating lease commitments not yet commenced The amount of optical fiber communication lines not yet commenced as of the reporting date. Optical fiber communication lines not yet commenced Optical fiber communication lines not yet commenced Operating Lease, Weighted Average Remaining Lease Term Weighted-average remaining lease term Operating Lease, Weighted Average Discount Rate, Percent Weighted-average discount rate of operating leases The number of financing leases maintained by the entity. Number of Financing Leases Number of financing leases Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2023 Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months 2024 Lessee, Operating Lease, Liability, Payments, Due Year Two 2025 Lessee, Operating Lease, Liability, Payments, Due Year Three 2026 Lessee, Operating Lease, Liability, Payments, Due Year Four 2027 Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Lessee, Operating Lease, Liability, to be Paid, after Year Four Thereafter Lessee, Operating Lease, Liability, Payments, Due Total lease payments Lessee, Operating Lease, Liability, Undiscounted Excess Amount Less interest Operating Lease, Liability Present value of lease liabilities Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Vesting [Axis] Vesting [Domain] Share-based Compensation Award, Tranche One [Member] Share-based Compensation Award, Tranche One Share-based Compensation Award, Tranche Two [Member] Share-based Compensation Award, Tranche Two Share-based Compensation Award, Tranche Three [Member] Share-based Compensation Award, Tranche Three Share Based Compensation Award Tranche Four [Member] Share-based Compensation Award Tranche Four [Member] Share-based Compensation Award Tranche Four Share Based Compensation Award Tranche Five [Member] Share-based Compensation Award Tranche Five [Member] Share-based Compensation Award Tranche Five Plan Name [Axis] Plan Name [Domain] Two Thousand And Seventeen Equity Incentive Plan [Member] 2017 Plan [Member] 2017 Plan 2008 Equity Incentive Plan. 2008 Plan [Member] 2008 Plan Grantee Status [Axis] Grantee Status [Domain] Share-based Payment Arrangement, Nonemployee Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Shares available for grant Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Shares granted Total Shares, Granted Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Vesting right percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Vesting period Number of anniversaries of grant date upon which restricted stock units vest. Number Of Anniversaries Of Grant Date Upon Which Restricted Stock Units Vest Number of anniversaries of the vesting date following the date of grant Shares Paid for Tax Withholding for Share Based Compensation Shares withheld for taxes Adjustments Related to Tax Withholding for Share-based Compensation Common stock in lieu of taxes Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Total Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Total Shares, Outstanding, Ending Balance Total Shares, Outstanding, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Total Shares, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Total Shares, Forfeited, canceled or expired Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted Average Grant Date Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Ending Balance Weighted Average Grant Date Fair Value, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Forfeited, canceled or expired Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Income Statement Location [Axis] Income Statement Location [Domain] Technical and academic services. Technical and Academic Services [Member] Technology and academic services Counseling support and services. Counseling Support and Services [Member] Counseling services and support Marketing and Communication [Member] Marketing and communication General and Administrative [Member] General and administrative Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-based Compensation Expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Tax effect of share-based compensation Allocated Share-based Compensation Expense, Net of Tax Share-based compensation expense, net of tax Class of Treasury Stock [Table] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Information pertaining to the common stock repurchase authorization. Common stock repurchase authorization Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Equity, Class of Treasury Stock [Line Items] Treasury Stock Amount of increase in stock repurchase plan authorized. Stock Repurchase Program, Increase in Authorized Amount Increase in stock repurchase plan authorized Stock Repurchase Program, Authorized Amount Authorized amount for repurchase of common stock Stock Repurchase Program, Remaining Authorized Repurchase Amount Remaining authorized repurchase amount Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Domain] Related Party [Member] Related Party Counterparty Name [Axis] Counterparty Name [Domain] GCE Community Fund Related Party Transaction [Line Items] Related party transactions Related Party Transaction, Expenses from Transactions with Related Party Contributions Due to Affiliate, Current Due to GCECF