SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 9,169	$ 8,686	$ 7,921
Charged to Costs and Expenses	1,956	845	2,261
Write-offs (Recoveries) of Doubtful Accounts	854	362	1,496
Balance at End of Period	10,271	9,169	8,686
Allowance for doubtful student notes
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	22,911	19,448	21,317
Charged to Costs and Expenses	20,301	18,659	16,529
Write-offs (Recoveries) of Doubtful Accounts	19,721	15,196	18,398
Balance at End of Period	$ 23,491	$ 22,911	$ 19,448