Revolving Credit Facility (Details) - USD ($) $ in Thousands			3 Months Ended
		Apr. 29, 2020	Mar. 31, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Revolving credit facility			$ 72,000	$ 122,500
Revolving Credit Facility [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, dividend restrictions, amount			50,000
Revolving credit facility, aggregate lender commitments			1,200,000	1,200,000
Revolving credit facility	[1]		72,000	122,500
Letters of credit			0	0
Available borrowing capacity			1,128,000	1,077,500
Revolving credit facility, unamortized deferred financing costs			$ 5,500	$ 5,900
Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, maximum loan amount		$ 2,500,000
Revolving credit facility, current borrowing base		1,100,000
Revolving credit facility, dividend restrictions, amount		12,000
Revolving credit facility, aggregate lender commitments		1,100,000
Revolving credit facility		93,500
Letters of credit		0
Available borrowing capacity		1,006,500
Revolving Credit Facility [Member] | Second Lien Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, current borrowing base		$ 900,000
Borrowing Base Utilization Of Less Than 25 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, unused capacity, commitment fee rate		0.375%
Borrowing Base Utilization Of 25 Percent Or More But Less Than 50 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, unused capacity, commitment fee rate		0.375%
Borrowing Base Utilization Of 50 Percent Or More But Less Than 75 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, unused capacity, commitment fee rate		0.50%
Borrowing Base Utilization Of 75 Percent Or More But Less Than 90 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, unused capacity, commitment fee rate		0.50%
Borrowing Base Utilization Of 90 Percent Or More [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, unused capacity, commitment fee rate		0.50%
Eurodollar [Member] | Borrowing Base Utilization Of Less Than 25 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate	[2]	1.75%
Eurodollar [Member] | Borrowing Base Utilization Of 25 Percent Or More But Less Than 50 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate	[2]	2.00%
Eurodollar [Member] | Borrowing Base Utilization Of 50 Percent Or More But Less Than 75 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate	[2]	2.50%
Eurodollar [Member] | Borrowing Base Utilization Of 75 Percent Or More But Less Than 90 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate	[2]	2.75%
Eurodollar [Member] | Borrowing Base Utilization Of 90 Percent Or More [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate	[2]	3.00%
Prime Rate [Member] | Borrowing Base Utilization Of Less Than 25 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate		0.75%
Prime Rate [Member] | Borrowing Base Utilization Of 25 Percent Or More But Less Than 50 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate		1.00%
Prime Rate [Member] | Borrowing Base Utilization Of 50 Percent Or More But Less Than 75 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate		1.50%
Prime Rate [Member] | Borrowing Base Utilization Of 75 Percent Or More But Less Than 90 Percent [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate		1.75%
Prime Rate [Member] | Borrowing Base Utilization Of 90 Percent Or More [Member] | Revolving Credit Facility [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, basis spread on variable rate		2.00%

[1] ⁽¹⁾  Unamortized deferred financing costs attributable to the revolving credit facility are presented as a component of the other noncurrent assets line item on the accompanying balance sheets and totaled $5.5 million and $5.9 million as of March 31, 2020, and December 31, 2019, respectively. These costs are being amortized over the term of the revolving credit facility on a straight-line basis.

[2] ⁽¹⁾  The Credit Agreement specifies that in the event that LIBOR is no longer a widely used benchmark rate, or that it is no longer used for determining interest rates for loans in the United States, a replacement interest rate that fairly reflects the cost to the lenders of funding loans shall be established by the Administrative Agent, as defined in the Credit Agreement, in consultation with the Company. Please refer to Note 1 - Summary of Significant Accounting Policies for discussion of FASB ASU 2020-04, which provides guidance related to reference rate reform.