Derivative Instruments (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Jun. 28, 2019	Dec. 31, 2018	Sep. 25, 2017
Derivative [Line Items]
Pre-tax (charge) on derivative instruments	$ (53,393)	$ 91,952	$ (56,072)	$ 60,566
Net loss (gain) on financial instruments	$ (2,500)	$ 1,400	$ 7,700	$ 12,100
June 30, 2017 [Member] [Member] | Swap [Member]
Derivative [Line Items]
Stated Interest Rate	2.706%		2.706%
Market Value (Liability)	$ (4,459)		$ (4,459)		$ (3,242)
Derivative Liability, Notional Amount	$ 140,625		$ 140,625		146,250		$ 150,000
May 5, 2021 [Member] [Member] [Member] | Swap [Member]
Derivative [Line Items]
Stated Interest Rate	1.09%		1.09%
Market Value (Liability)	$ 77		$ 77		(111)
Derivative Liability, Notional Amount	$ 15,000		$ 15,000		20,625
May 30, 2021 [Member] | Swap [Member]
Derivative [Line Items]
Stated Interest Rate	1.703%		1.703%
Market Value (Liability)	$ 139		$ 139		25
Derivative Liability, Notional Amount	$ 15,000		$ 15,000		20,625
March 31, 2022 One [Member] [Member] | Swap [Member]
Derivative [Line Items]
Stated Interest Rate	1.90%		1.90%
Market Value (Liability)	$ 1,340		$ 1,340		408
Derivative Liability, Notional Amount	$ 50,000		$ 50,000		50,000
March 31, 2022 Two [Member] [Member] [Member] | Swap [Member]
Derivative [Line Items]
Stated Interest Rate	1.95%		1.95%
Market Value (Liability)	$ 2,067		$ 2,067		696
Derivative Liability, Notional Amount	$ 75,000		$ 75,000		75,000
March 31, 2023 [Member] | Swap [Member]
Derivative [Line Items]
Stated Interest Rate	2.425%		2.425%
Market Value (Liability)	$ 7,779		$ 7,779		3,866
Derivative Liability, Notional Amount	$ 142,500		$ 142,500		$ 148,125	$ 150,000
Convertible Debt [Member]
Derivative [Line Items]
Convertible note hedge shares								8,100