Derivatives - Interest Rate Swaps (Details) - USD ($)		1 Months Ended	3 Months Ended
		Dec. 31, 2020	Mar. 31, 2021		Mar. 31, 2020	Apr. 30, 2019
Derivatives
Derivative, notional amount			$ 350,000,000.0			$ 850,000,000.0
Derivative, fixed interest rate						2.28%
Derivative, termination payment		$ 10,900,000
Derivative, notional amount, amount terminated		500,000,000.0
Derivative liability		10,900,000
Change in fair value of derivatives due to accelerated amortization			2,900,000
(Loss) gain on interest rate swaps			4,800,000		$ 1,300,000
Change in fair value of derivatives			(7,900,000)		13,000,000.0
Tax benefit (expense)			(1,100,000)	[1]	4,000,000.0
(Loss) gain on designated cash flow hedge	[1],[2]		3,600,000		(13,100,000)
Interest expense expected to be reclassified out of accumulated other comprehensive income (loss) over the next twelve months			13,500,000
Fair value of derivative liabilities—current		(37,100,000)	(59,300,000)
Interest rate swaps
Derivatives
Change in fair value of derivatives			4,700,000		$ (17,100,000)
Fair value of derivative liabilities—current		$ (7,600,000)	$ (5,700,000)

[1] Includes a tax expense of $1.1 million and a tax benefit of $4.0 million for the three months ended March 31, 2021 and 2020, respectively.

[2] Includes a tax expense of $1.1 million.