Long-Term Debt - Acquisition Debt (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended
	Sep. 30, 2019	Oct. 31, 2019	Oct. 31, 2019
Long-term debt
Write-off of debt discount and deferred financing fees		$ 707	$ 707
First Lien Loan
Long-term debt
Aggregate principal amount		$ 919,600	$ 919,600
Percentage of quarterly principal payments			0.25%
Write-off of debt discount and deferred financing fees	$ 700
Borrowing interest rate (as a percent)		4.54%	4.54%
Repayments of Debt	$ 50,000
First Lien Loan | LIBOR
Long-term debt
Margin added to variable rate (as a percent)			2.75%
Variable rate floor (as a percent)			0.00%