Credit Agreement - Narrative (Details) - USD ($) $ in Thousands	Dec. 23, 2019	Jun. 30, 2020	Jun. 30, 2019
Line of Credit Facility [Line Items]
Principal amount		$ 312,000
Current borrowings		$ 135,163	$ 220,000
Variable rate spread (as a percent)	0.50%
Margin rate (as a percent)	0.50%
Maximum leverage ratio		3.50
Minimum interest coverage ratio		2.50
Non-current borrowings, net		$ 292,369	$ 0
Debt Issuance Costs, Line of Credit Arrangements, Net		3,600
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Principal amount	$ 200,000
Current borrowings		119,200
Line of Credit Facility, Fair Value of Amount Outstanding		119,200
Secured Debt [Member]
Line of Credit Facility [Line Items]
Current borrowings		$ 16,000
Adjusted LIBOR
Line of Credit Facility [Line Items]
Variable rate spread (as a percent)	1.00%
Margin rate (as a percent)	1.50%
Outstanding Borrowing 2 [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Effective interest rate (as a percent)		1.69%
Line of Credit Facility, Fair Value of Amount Outstanding		$ 100,000
Outstanding Borrowing 3 [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Effective interest rate (as a percent)		1.68%
Line of Credit Facility, Fair Value of Amount Outstanding		$ 19,200
Secured Debt [Member]
Line of Credit Facility [Line Items]
Principal amount	$ 320,000
Effective interest rate (as a percent)		1.68%
Term Loan Facility, Amount Outstanding		$ 312,000
Non-current borrowings, net		$ 296,000