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v3.20.2

Significant Accounting Policies - Impact of Adoption on Balance Sheet (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Accounting standards update | us-gaap:AccountingStandardsUpdate201613Member |
Tuition receivable, net | $ 51,523 | $ 45,958
Deferred income tax liabilities | 47,942 | 34,012
Retained earnings | 152,819 | $ 188,392
Previously Reported |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Tuition receivable, net | 51,523 |
Deferred income tax liabilities | 47,942 |
Retained earnings | 152,819 |
Cumulative Effect, Period of Adoption, Adjusted Balance | Revision of Prior Period, Adjustment |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Tuition receivable, net | 46,952 |
Deferred income tax liabilities | 46,681 |
Retained earnings | 149,509 |
Cumulative Effect Period of Adoption Adjustment |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Tuition receivable, net | (4,571) |
Deferred income tax liabilities | (1,261) |
Retained earnings | $ (3,310) |

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