Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Summary of Significant Accounting Policies
Revenues	$ 425,150	$ 400,226
School operating losses included in the entity's revenue	$ 10,100	12,900
Minimum
Summary of Significant Accounting Policies
Duration of contracts providing access to curriculum via the entity's Web site	1 year
Maximum
Summary of Significant Accounting Policies
Duration of contracts providing access to curriculum via the entity's Web site	2 years
Primary Obligor
Summary of Significant Accounting Policies
Revenues	$ 125,300	$ 113,900