Financing Arrangements - Additional Information (Details)			3 Months Ended		6 Months Ended		12 Months Ended
	May 06, 2019 USD ($)	Apr. 16, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2014 USD ($) instrument	Apr. 17, 2014 USD ($)
Debt Instrument [Line Items]
Number of debt instruments | instrument							2
Amortization of deferred financing costs			$ 5,655,000	$ 1,304,000	$ 6,959,000	$ 2,608,000
Term Loan Facility
Debt Instrument [Line Items]
Aggregate principal amount							$ 1,045,000,000.0
Amount outstanding			843,700,000		843,700,000
Amortization of deferred financing costs			5,600,000		6,900,000
Unamortized deferred financing costs			15,400,000		15,400,000
Debt interest expense			$ 18,900,000	$ 13,600,000	$ 35,600,000	$ 25,900,000
Line of Credit | Term Loan Facility | Standstill Agreement
Debt Instrument [Line Items]
Commitment fee percentage	0.625%
One-time fee, payable in-kind	$ 10,900,000
Increase in interest rate percentage	1.50%
Increase in interest rate percentage, payable in cash	0.75%
Increase in interest rate percentage, payable in kind	0.75%
Number of consecutive business days in cure period	5 days
Increase in interest rate percentage due to failure to comply with covenants	0.50%
Line of Credit | Revolving Credit Facility | JPM Revolving Facility
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 150,000,000.0
Line of credit facility, undrawn fee percentage		0.25%
Line of Credit | Revolving Credit Facility | A&R Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 150,000,000.0
Line of credit facility, extension of maturity		90 days
Line of credit facility, undrawn fee percentage		0.05%