SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 10,271	$ 9,169	$ 8,686
Charged to Costs and Expenses	516	1,956	845
Write-offs (Recoveries) of Doubtful Accounts	1,450	854	362
Balance at End of Period	9,337	10,271	9,169
Allowance for doubtful student notes
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	23,491	22,911	19,448
Charged to Costs and Expenses	22,318	20,301	18,659
Write-offs (Recoveries) of Doubtful Accounts	23,107	19,721	15,196
Balance at End of Period	$ 22,702	$ 23,491	$ 22,911