Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2021
Accounting Policies [Abstract]
Financial Statement Presentation	Financial Statement Presentation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in the consolidated financial statements. On November 3, 2020, the Company completed its acquisition of ANZ, whereby the Company was deemed the acquirer in the business combination for accounting purposes in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Accordingly, the financial results of the Company as of and for any periods ended prior to November 3, 2020 do not include the financial results of ANZ and therefore are not directly comparable. All information as of September 30, 2020 and 2021, and for the three and nine months ended September 30, 2020 and 2021 is unaudited but, in the opinion of management, contains all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the condensed consolidated financial position, results of operations, and cash flows of the Company. The condensed consolidated balance sheet as of December 31, 2020 has been derived from the audited consolidated financial statements at that date. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the full fiscal year. Below is a description of the nature of the costs included in the Company’s operating expense categories. Instructional and support costs (“I&SC”) generally contain items of expense directly attributable to activities that support students. This expense category includes salaries and benefits of faculty and academic administrators, as well as admissions and administrative personnel who support and serve student interests. Instructional and support costs also include course development costs and costs associated with delivering course content, including educational supplies, facilities, and all other physical plant and occupancy costs, with the exception of costs attributable to the corporate offices. Bad debt expense incurred on delinquent student account balances is also included in instructional and support costs. General and administration (“G&A”) expenses include salaries and benefits of management and employees engaged in finance, human resources, legal, regulatory compliance, marketing and other corporate functions. Also included are the costs of advertising and production of marketing materials. General and administration expense also includes the facilities occupancy and other related costs attributable to such functions. Amortization of intangible assets consists of amortization and depreciation expense related to intangible assets and software assets acquired through the Company's merger with Capella Education Company (“CEC”) and the Company's acquisition of ANZ. Merger and integration costs include integration expenses associated with the Company's merger with CEC, and transaction and integration expenses associated with the Company's acquisition of ANZ. Restructuring costs include severance and other personnel-related expenses from voluntary and involuntary employee terminations, as well as early lease termination costs and impairments of right-of-use lease assets and fixed assets associated with vacating leased space in connection with the Company's restructuring plans. See Note 5 for additional information.
Foreign Currency Translation and Transaction Gains and Losses	Foreign Currency Translation and Transaction Gains and Losses The United States Dollar (“USD”) is the functional currency of the Company and its subsidiaries operating in the United States. The financial statements of its foreign subsidiaries are maintained in their functional currencies. The functional currency of each of the foreign subsidiaries is the currency of the economic environment in which the subsidiary primarily does business. Financial statements of foreign subsidiaries are translated into USD using the exchange rates applicable to the dates of the financial statements. Assets and liabilities are translated into USD using the period-end spot foreign exchange rates. Income and expenses are translated at the weighted-average exchange rates in effect during the period. Equity accounts are translated at historical exchange rates. The effects of these translation adjustments are reported as a component of accumulated other comprehensive income within shareholders’ equity. For any transaction that is in a currency different from the entity’s functional currency, the Company records a net gain or loss based on the difference between the exchange rate at the transaction date and the exchange rate at the transaction settlement date (or rate at period end, if unsettled), in the unaudited condensed consolidated statements of income.
Restricted Cash	Restricted CashIn the United States, a significant portion of the Company’s revenues are funded by various federal and state government programs. The Company generally does not receive funds from these programs prior to the start of the corresponding academic term. The Company may be required to return certain funds for students who withdraw from a U.S. Higher Education institution during the academic term.In Australia and New Zealand, advance tuition payments from international students are required to be restricted until that student commences his or her course. In addition, a portion of tuition prepayments from students enrolled in a vocational education and training program are held in trust by a third party law firm to adhere to tuition protection requirements.These balances are recorded as restricted cash and included in other current assets in the unaudited condensed consolidated balance sheets.
Tuition Receivable and Allowance for Credit Losses	Tuition Receivable and Allowance for Credit Losses The Company adopted Accounting Standards Update No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASC 326") on January 1, 2020, which revised the accounting requirements related to the measurement of credit losses and requires organizations to measure all expected credit losses for financial assets based on historical experience, current conditions, and reasonable and supportable forecasts about collectability. The Company records tuition receivable and contract liabilities for its students upon the start of the academic term or program. Tuition receivables are not collateralized; however, credit risk is minimized as a result of the diverse nature of the Company's student bases and through the participation of the majority of the students in federally funded financial aid programs. An allowance for credit losses is established based upon historical collection rates by age of receivable and adjusted for reasonable expectations of future collection performance, net of estimated recoveries. These collection rates incorporate historical performance based on a student’s current enrollment status, likelihood of future enrollment, degree mix trends and changes in the overall economic environment. In the event that current collection trends differ from historical trends, an adjustment is made to the allowance for credit losses and bad debt expense.
Assets Held for Sale	Assets Held for Sale The Company classifies assets and liabilities as held for sale (“disposal group”) when management, having the authority to approve the action, commits to a plan to sell the disposal group, the sale is probable to be completed within one year, and the disposal group is available for immediate sale in its present condition. The Company also considers whether an active program to locate a buyer has been initiated, whether the disposal group is marketed actively for sale at a price that is reasonable in relation to its current fair value, and whether actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. The Company initially measures a disposal group that is classified as held for sale at the lower of its carrying amount or fair value less costs to sell. Any loss resulting from this measurement is recognized in the period in which the held for sale criteria are met. Gains are not recognized until the date of sale. Assets are not depreciated or amortized while they are classified as held for sale. Upon determining that a disposal group meets the criteria to be classified as held for sale, the Company reports the assets and liabilities of the disposal group as assets held for sale and liabilities held for sale in its unaudited condensed consolidated balance sheets.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill represents the excess of the purchase price of an acquired business over the amount assigned to the assets acquired and liabilities assumed in a business combination. Indefinite-lived intangible assets, which include trade names, are recorded at fair value on their acquisition date. An indefinite life was assigned to the trade names because they have the continued ability to generate cash flows indefinitely. Goodwill and the indefinite-lived intangible assets are assessed at least annually for impairment during the fourth quarter, or more frequently if events occur or circumstances change between annual tests that would more likely than not reduce the fair value of the respective reporting unit or indefinite-lived intangible asset below its carrying amount. The Company identifies its reporting units by assessing whether the components of its operating segments constitute businesses for which discrete financial information is available and management regularly reviews the operating results of those components. Finite-lived intangible assets that are acquired in business combinations are recorded at fair value on their acquisition dates and are amortized on a straight-line basis over the estimated useful life of the asset. Finite-lived intangible assets consist of student relationships. The Company reviews its finite-lived intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If such assets are not recoverable, a potential impairment loss is recognized to the extent the carrying amount of the assets exceeds the fair value of the assets.
Authorized Stock	Authorized Stock The Company has authorized 32,000,000 shares of common stock, par value $0.01, of which 24,418,939 and 24,600,479 shares were issued and outstanding as of December 31, 2020 and September 30, 2021, respectively. The Company also has authorized 8,000,000 shares of preferred stock, none of which is issued or outstanding. Before any preferred stock may be issued in the future, the Board of Directors would need to establish the preferences, conversion or other rights, voting powers, restrictions, limitations as to dividends, qualifications, and the terms or conditions of the redemption of the preferred stock. In July 2021, the Company’s Board of Directors declared a regular, quarterly cash dividend of $0.60 per share of common stock. The dividend was paid on September 13, 2021.
Net Income Per Share	Net Income Per Share Basic earnings per share is computed by dividing net income by the weighted average number of shares of common stock outstanding during the periods. Diluted earnings per share reflects the potential dilution that could occur assuming conversion or exercise of all dilutive unexercised stock options, restricted stock, and restricted stock units. The dilutive effect of stock awards was determined using the treasury stock method. Under the treasury stock method, all of the following are assumed to be used to repurchase shares of the Company’s common stock: (1) the proceeds received from the exercise of stock options, and (2) the amount of compensation cost associated with the stock awards for future service not yet recognized by the Company. Stock options are not included in the computation of diluted earnings per share when the stock option exercise price of an individual grant exceeds the average market price for the period.
Comprehensive Income	Comprehensive IncomeComprehensive income includes net income and all changes in the Company’s equity during a period from non-owner sources, which for the Company consists of unrealized gains and losses on available-for-sale marketable securities, net of tax, and foreign currency translation adjustments.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of expenses during the period reported. The most significant management estimates include allowances for credit losses, useful lives of property and equipment and intangible assets, incremental borrowing rates, potential sublease income and vacancy periods, accrued expenses, forfeiture rates and the likelihood of achieving performance criteria for stock-based awards, value of free courses earned by students that will be redeemed in the future, valuation of goodwill and intangible assets, and the provision for income taxes. During the nine months ended September 30, 2020 and 2021, management estimates also include potential impacts the COVID-19 pandemic will have on student enrollment, tuition pricing, and collections in future periods. The duration and severity of the COVID-19 pandemic and its impact on the Company’s condensed consolidated financial statements is subject to uncertainty. Actual results could differ from those estimates.
Recently Issued Accounting Standards Not Yet Adopted	Recently Issued Accounting Standards Not Yet Adopted Accounting Standards Updates recently issued by the FASB but not yet effective are not expected to have a material effect on the Company’s consolidated financial statements.

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2021

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in the consolidated financial statements.

On November 3, 2020, the Company completed its acquisition of ANZ, whereby the Company was deemed the acquirer in the business combination for accounting purposes in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Accordingly, the financial results of the Company as of and for any periods ended prior to November 3, 2020 do not include the financial results of ANZ and therefore are not directly comparable.

All information as of September 30, 2020 and 2021, and for the three and nine months ended September 30, 2020 and 2021 is unaudited but, in the opinion of management, contains all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the condensed consolidated financial position, results of operations, and cash flows of the Company. The condensed consolidated balance sheet as of December 31, 2020 has been derived from the audited consolidated financial statements at that date. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the full fiscal year.

Below is a description of the nature of the costs included in the Company’s operating expense categories.

Instructional and support costs (“I&SC”) generally contain items of expense directly attributable to activities that support students. This expense category includes salaries and benefits of faculty and academic administrators, as well as admissions and administrative personnel who support and serve student interests. Instructional and support costs also include course development costs and costs associated with delivering course content, including educational supplies, facilities, and all other physical plant and occupancy costs, with the exception of costs attributable to the corporate offices. Bad debt expense incurred on delinquent student account balances is also included in instructional and support costs.

General and administration (“G&A”) expenses include salaries and benefits of management and employees engaged in finance, human resources, legal, regulatory compliance, marketing and other corporate functions. Also included are the costs of advertising and production of marketing materials. General and administration expense also includes the facilities occupancy and other related costs attributable to such functions.

Amortization of intangible assets consists of amortization and depreciation expense related to intangible assets and software assets acquired through the Company's merger with Capella Education Company (“CEC”) and the Company's acquisition of ANZ.

Merger and integration costs include integration expenses associated with the Company's merger with CEC, and transaction and integration expenses associated with the Company's acquisition of ANZ.

Restructuring costs include severance and other personnel-related expenses from voluntary and involuntary employee terminations, as well as early lease termination costs and impairments of right-of-use lease assets and fixed assets associated with vacating leased space in connection with the Company's restructuring plans. See Note 5 for additional information.

Foreign Currency Translation and Transaction Gains and Losses

The United States Dollar (“USD”) is the functional currency of the Company and its subsidiaries operating in the United States. The financial statements of its foreign subsidiaries are maintained in their functional currencies. The functional currency of each of the foreign subsidiaries is the currency of the economic environment in which the subsidiary primarily does business. Financial statements of foreign subsidiaries are translated into USD using the exchange rates applicable to the dates of the financial statements. Assets and liabilities are translated into USD using the period-end spot foreign exchange rates. Income and expenses are translated at the weighted-average exchange rates in effect during the period. Equity accounts are translated at historical exchange rates. The effects of these translation adjustments are reported as a component of accumulated other comprehensive income within shareholders’ equity.

For any transaction that is in a currency different from the entity’s functional currency, the Company records a net gain or loss based on the difference between the exchange rate at the transaction date and the exchange rate at the transaction settlement date (or rate at period end, if unsettled), in the unaudited condensed consolidated statements of income.

Restricted Cash

Restricted CashIn the United States, a significant portion of the Company’s revenues are funded by various federal and state government programs. The Company generally does not receive funds from these programs prior to the start of the corresponding academic term. The Company may be required to return certain funds for students who withdraw from a U.S. Higher Education institution during the academic term.In Australia and New Zealand, advance tuition payments from international students are required to be restricted until that student commences his or her course. In addition, a portion of tuition prepayments from students enrolled in a vocational education and training program are held in trust by a third party law firm to adhere to tuition protection requirements.These balances are recorded as restricted cash and included in other current assets in the unaudited condensed consolidated balance sheets.

Tuition Receivable and Allowance for Credit Losses

The Company adopted Accounting Standards Update No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASC 326") on January 1, 2020, which revised the accounting requirements related to the measurement of credit losses and requires organizations to measure all expected credit losses for financial assets based on historical experience, current conditions, and reasonable and supportable forecasts about collectability.

The Company records tuition receivable and contract liabilities for its students upon the start of the academic term or program. Tuition receivables are not collateralized; however, credit risk is minimized as a result of the diverse nature of the Company's student bases and through the participation of the majority of the students in federally funded financial aid programs. An allowance for credit losses is established based upon historical collection rates by age of receivable and adjusted for reasonable expectations of future collection performance, net of estimated recoveries. These collection rates incorporate historical performance based on a student’s current enrollment status, likelihood of future enrollment, degree mix trends and changes in the overall economic environment. In the event that current collection trends differ from historical trends, an adjustment is made to the allowance for credit losses and bad debt expense.

Assets Held for Sale

The Company classifies assets and liabilities as held for sale (“disposal group”) when management, having the authority to approve the action, commits to a plan to sell the disposal group, the sale is probable to be completed within one year, and the disposal group is available for immediate sale in its present condition. The Company also considers whether an active program to locate a buyer has been initiated, whether the disposal group is marketed actively for sale at a price that is reasonable in relation to its current fair value, and whether actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. The Company initially measures a disposal group that is classified as held for sale at the lower of its carrying amount or fair value less costs to sell. Any loss resulting from this measurement is recognized in the period in which the held for sale criteria are met. Gains are not recognized until the date of sale. Assets are not depreciated or amortized while they are classified as held for sale. Upon determining that a disposal group meets the criteria to be classified as held for sale, the Company reports the assets and liabilities of the disposal group as assets held for sale and liabilities held for sale in its unaudited condensed consolidated balance sheets.

Goodwill and Intangible Assets

Goodwill represents the excess of the purchase price of an acquired business over the amount assigned to the assets acquired and liabilities assumed in a business combination. Indefinite-lived intangible assets, which include trade names, are recorded at fair value on their acquisition date. An indefinite life was assigned to the trade names because they have the continued ability to generate cash flows indefinitely.

Goodwill and the indefinite-lived intangible assets are assessed at least annually for impairment during the fourth quarter, or more frequently if events occur or circumstances change between annual tests that would more likely than not reduce the fair value of the respective reporting unit or indefinite-lived intangible asset below its carrying amount. The Company identifies its reporting units by assessing whether the components of its operating segments constitute businesses for which discrete financial information is available and management regularly reviews the operating results of those components.

Finite-lived intangible assets that are acquired in business combinations are recorded at fair value on their acquisition dates and are amortized on a straight-line basis over the estimated useful life of the asset. Finite-lived intangible assets consist of student relationships.

The Company reviews its finite-lived intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If such assets are not recoverable, a potential impairment loss is recognized to the extent the carrying amount of the assets exceeds the fair value of the assets.

Authorized Stock

The Company has authorized 32,000,000 shares of common stock, par value $0.01, of which 24,418,939 and 24,600,479 shares were issued and outstanding as of December 31, 2020 and September 30, 2021, respectively. The Company also has authorized 8,000,000 shares of preferred stock, none of which is issued or outstanding. Before any preferred stock may be issued in the future, the Board of Directors would need to establish the preferences, conversion or other rights, voting powers, restrictions, limitations as to dividends, qualifications, and the terms or conditions of the redemption of the preferred stock.

In July 2021, the Company’s Board of Directors declared a regular, quarterly cash dividend of $0.60 per share of common stock. The dividend was paid on September 13, 2021.

Net Income Per Share

Basic earnings per share is computed by dividing net income by the weighted average number of shares of common stock outstanding during the periods. Diluted earnings per share reflects the potential dilution that could occur assuming conversion or exercise of all dilutive unexercised stock options, restricted stock, and restricted stock units. The dilutive effect of stock awards was determined using the treasury stock method. Under the treasury stock method, all of the following are assumed to be used to repurchase shares of the Company’s common stock: (1) the proceeds received from the exercise of stock options, and (2) the amount of compensation cost associated with the stock awards for future service not yet recognized by the Company. Stock options are not included in the computation of diluted earnings per share when the stock option exercise price of an individual grant exceeds the average market price for the period.

Comprehensive Income

Comprehensive IncomeComprehensive income includes net income and all changes in the Company’s equity during a period from non-owner sources, which for the Company consists of unrealized gains and losses on available-for-sale marketable securities, net of tax, and foreign currency translation adjustments.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of expenses during the period reported. The most significant management estimates include allowances for credit losses, useful lives of property and equipment and intangible assets, incremental borrowing rates, potential sublease income and vacancy periods, accrued expenses, forfeiture rates and the likelihood of achieving performance criteria for stock-based awards, value of free courses earned by students that will be redeemed in the future, valuation of goodwill and intangible assets, and the provision for income taxes. During the nine months ended September 30, 2020 and 2021, management estimates also include potential impacts the COVID-19 pandemic will have on student enrollment, tuition pricing, and collections in future periods. The duration and severity of the COVID-19 pandemic and its impact on the Company’s condensed consolidated financial statements is subject to uncertainty. Actual results could differ from those estimates.

Recently Issued Accounting Standards Not Yet Adopted

Accounting Standards Updates recently issued by the FASB but not yet effective are not expected to have a material effect on the Company’s consolidated financial statements.