Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Summary of Significant Accounting Policies
Revenues	$ 551,084	$ 480,181
Estimate of Percentage of Impact on Total Revenue	2.00%	2.00%
School operating losses included in the entity's revenue	$ 5,000	$ 5,200
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	$ 154,200	$ 136,100