Debt (Additional Information) (Details) - USD ($) $ in Thousands							3 Months Ended		7 Months Ended	18 Months Ended
	Sep. 30, 2026	Sep. 18, 2026	Mar. 02, 2026	Aug. 06, 2025	Aug. 12, 2021	Mar. 01, 2021	Sep. 30, 2026	Sep. 30, 2025	Sep. 17, 2026	Mar. 01, 2026	Jun. 30, 2026
Line of Credit Facility [Line Items]
Repayment of long-term debt							$ 163,000	$ 0
Loss on debt extinguishment							0	295
Total principal	$ 510,000						510,000				$ 673,000
Surety Bond
Line of Credit Facility [Line Items]
Guarantor Obligations, Current Carrying Value	85,000						85,000
Letter of Credit [Member] | Title IV Letter Of Credit
Line of Credit Facility [Line Items]
Letters of credit outstanding	202,600						$ 202,600
Percentage of funds received							10.00%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Total principal	0						$ 0				163,000
Maximum borrowing capacity				$ 500,000	$ 400,000
Amount repaid							$ 163,000	0
Commitment fee percentage							0.25%
Undrawn amount on letters of credit	500,000						$ 500,000
Additional borrowing capacity				$ 100,000
Debt instrument, maturity date				Aug. 06, 2030	Aug. 12, 2026
Line of credit	0						$ 0	0
Capitalized debt issuance costs								3,800
Amortization period				5 years
Revolving Credit Facility | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpense
Line of Credit Facility [Line Items]
Debt Issuance Costs Write-off								$ 300
Revolving Credit Facility | Maximum | Scenario Plan
Line of Credit Facility [Line Items]
Total net leverage ratio							3.25
Revolving Credit Facility | Alternate Base Rate | Minimum
Line of Credit Facility [Line Items]
Basic spread rate							1.25%
Revolving Credit Facility | Alternate Base Rate | Maximum
Line of Credit Facility [Line Items]
Basic spread rate							2.00%
Revolving Credit Facility | SOFR | Minimum
Line of Credit Facility [Line Items]
Basic spread rate							2.25%
Revolving Credit Facility | SOFR | Maximum
Line of Credit Facility [Line Items]
Basic spread rate							3.00%
Senior Secured Notes Due 2028
Line of Credit Facility [Line Items]
Debt instrument, face amount						$ 800,000
Fixed interest rate						5.50%
Repayment of long-term debt			$ 405,000
Redemption price, percentage of principal amount redeemed			100.00%
Debt instrument, maturity date						Mar. 01, 2028
Term B Loan
Line of Credit Facility [Line Items]
Debt instrument, face amount			$ 510,000		$ 850,000
Extinguishment of debt			103,300
Total principal	$ 510,000		$ 510,000				$ 510,000				$ 510,000
Reduction in margin interest rate		(0.25%)
Principal payment		$ 1,275
Effective interest rate	6.07%						6.07%
Debt instrument, maturity date			Mar. 02, 2033		Aug. 12, 2028
Debt instrument, issuance price, percent of principal amount			99.50%
Debt instrument, issuance discount, percent			0.50%
Amortization period			7 years
Term B Loan | Alternate Base Rate
Line of Credit Facility [Line Items]
Basic spread rate	1.00%								1.25%	1.75%
Term B Loan | SOFR
Line of Credit Facility [Line Items]
Basic spread rate	2.00%								2.25%	2.75%
Floor rate	0.75%								0.75%	0.75%