Debt (Additional Information) (Details) - USD ($) $ in Thousands									1 Months Ended	3 Months Ended					9 Months Ended
	Jan. 26, 2024	Jan. 25, 2024	Nov. 22, 2022	Sep. 22, 2022	Apr. 11, 2022	Mar. 11, 2022	Aug. 12, 2021	Mar. 01, 2021	Jun. 30, 2022	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Mar. 31, 2024	Mar. 31, 2023	Apr. 26, 2024	Jan. 31, 2024	Jun. 30, 2023
Line of Credit Facility [Line Items]
Repayment of long-term debt															$ 51,896	$ 150,861
Gain on extinguishment of debt										$ 0	$ 0				0	71
Long-term debt, gross										658,283					$ 658,283				$ 708,283
Commitment fee percentage															0.25%
Undrawn amount on letters of credit										242,100					$ 242,100
Debt Issuance Costs Write-off															1,113
Surety Bond [Member]
Line of Credit Facility [Line Items]
Guarantor Obligations, Current Carrying Value										42,500					42,500
Revolver
Line of Credit Facility [Line Items]
Maximum borrowing capacity							$ 400,000			400,000					400,000
Letters Of Credit Outstanding, Increase (Decrease) Amount															(90,800)
Letters of credit outstanding										241,900					241,900
Letters of credit expired																		$ 76,200
Long-term Line of Credit										0	0				$ 0	0
Term															5 years
Debt Issuance Costs Write-off															$ 0
Revolver | Scenario, Plan
Line of Credit Facility [Line Items]
Letters of credit outstanding																	$ 227,300
Revolver | Alternate Base Rate | Minimum
Line of Credit Facility [Line Items]
Basic spread rate															2.75%
Revolver | Alternate Base Rate | Maximum
Line of Credit Facility [Line Items]
Basic spread rate															3.25%
Revolver | SOFR
Line of Credit Facility [Line Items]
Basic spread rate															0.75%
Revolver | SOFR | Minimum
Line of Credit Facility [Line Items]
Basic spread rate															3.75%
Revolver | SOFR | Maximum
Line of Credit Facility [Line Items]
Basic spread rate															4.25%
Walden Title IV Letter Of Credit | Surety Bond [Member]
Line of Credit Facility [Line Items]
Letters of credit outstanding										84,000					$ 84,000
Walden Title IV Letter Of Credit | Scenario, Plan | Surety Bond [Member]
Line of Credit Facility [Line Items]
Letters of credit outstanding																	$ 69,400
Title IV Letter Of Credit
Line of Credit Facility [Line Items]
Letters of credit outstanding										$ 157,900					$ 157,900
Senior Secured Notes Due 2028 And Term B Loan
Line of Credit Facility [Line Items]
Term															7 years
Cap percentage															20.00%
Senior Secured Notes Due 2028 And Term B Loan | Scenario, Plan
Line of Credit Facility [Line Items]
Total net leverage ratio										3.25%					4.00%
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					$ 373,300				$ 20,800			$ 900	$ 394,100
Gain on extinguishment of debt																100
Long-term debt, gross										$ 404,950					$ 404,950				404,950
Percentage of notes issued on par value								100.00%
Redemption price, percentage of principal amount redeemed					100.00%			100.00%	90.00%			92.00%
Debt covenant, percentage of principal amount of notes outstanding								25.00%
Debt Issuance Costs Write-off										0	0				0	15
Senior Secured Notes Due 2028 | Accrued Liabilities
Line of Credit Facility [Line Items]
Debt Instrument, Accrued Interest										$ 1,900					$ 1,900				7,400
Senior Secured Notes Due 2028 | 2024
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed								102.75%
Senior Secured Notes Due 2028 | 2025
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed								101.375%
Senior Secured Notes Due 2028 | 2026
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed								100.00%
Senior Secured Notes Due 2028 | Prior to March 1,2024
Line of Credit Facility [Line Items]
Redemption price percentage								105.50%
Senior Secured Notes Due 2028 | Maximum | Prior to March 1,2024
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed								40.00%
Term B Loan
Line of Credit Facility [Line Items]
Debt instrument, face amount							$ 850,000
Fixed interest rate										8.83%					8.83%
Repayment of long-term debt	$ 50,000		$ 50,000	$ 100,000		$ 396,700
Long-term debt, gross										$ 253,333					$ 253,333				$ 303,333
Reduction in margin interest rate	(0.50%)
Principal payment														$ 2,125
Debt Instrument, Issuance Price, Percent Of Principal Amount							99.00%
Debt Instrument, Issuance Discount, Percent							1.00%
Debt Issuance Costs Write-off										$ 1,113	$ 0				$ 1,113	$ 4,282
Asset sale or disposition period															1 year
Asset sale or disposition investments															$ 20,000
Mandatory prepayment terms															$ 0
Term B Loan | Alternate Base Rate | Minimum
Line of Credit Facility [Line Items]
Basic spread rate	2.50%	3.00%
Term B Loan | Alternate Base Rate | Maximum
Line of Credit Facility [Line Items]
Basic spread rate	3.00%	3.50%
Term B Loan | Eurocurrency Rate | Minimum
Line of Credit Facility [Line Items]
Basic spread rate	3.50%	4.00%
Term B Loan | Eurocurrency Rate | Maximum
Line of Credit Facility [Line Items]
Basic spread rate	4.00%	4.50%
Term B Loan | SOFR
Line of Credit Facility [Line Items]
Basic spread rate	0.75%	0.75%