Revenue - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Accounts and notes receivable	$ 133,105	$ 117,987
Deferred revenue and student deposits, current	51,264	43,959
Capitalized contract cost	8,800	5,800
Capitalized contract cost, accumulated amortization	4,900	3,100
Amortization of capitalized costs	$ 1,700	$ 1,400
Minimum
Disaggregation of Revenue [Line Items]
Contract cost, amortization period	2 years
Maximum
Disaggregation of Revenue [Line Items]
Contract cost, amortization period	4 years
Commission and Bonuses
Disaggregation of Revenue [Line Items]
Remaining performance obligations recognition period	one year or less
Incremental Cost of Obtaining a Contract With Students
Disaggregation of Revenue [Line Items]
Remaining performance obligations recognition period	one year or less