Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

The following table summarizes the Company’s total outstanding balance on its revolving credit facility, Senior Secured Notes net of unamortized discount and deferred financing costs, and Senior Unsecured Notes net of unamortized deferred financing costs, as of June 30, 2021, and December 31, 2020:

	As of June 30, 2021		As of December 31, 2020
	(in thousands)
Revolving credit facility	$	52,500	$	93,000
Senior Secured Notes (1)	467,807		460,656
Senior Unsecured Notes (1)	1,671,818		1,660,663
Total	$	2,192,125	$	2,214,319

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(1)    Senior Secured Notes and Senior Unsecured Notes are defined below.

Schedule of Line of Credit Facilities [Table Text Block]

The following table presents the outstanding balance, total amount of letters of credit outstanding, and available borrowing capacity under the Credit Agreement as of July 21, 2021, June 30, 2021, and December 31, 2020:

	As of July 21, 2021		As of June 30, 2021		As of December 31, 2020
	(in thousands)
Revolving credit facility (1)	$	99,000	$	52,500	$	93,000
Letters of credit (2)	—		—		42,000
Available borrowing capacity	1,001,000		1,047,500		965,000
Total aggregate lender commitment amount	$	1,100,000	$	1,100,000	$	1,100,000

____________________________________________

(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 $3.5 million and $4.3 million as of June 30, 2021, and December 31, 2020, respectively. These costs are being amortized over the term of the revolving credit facility on a straight-line basis.

(2)    Letters of credit outstanding reduce the amount available under the revolving credit facility on a dollar-for-dollar basis.

Schedule Of Long-term Debt Instruments, Senior Secured Notes [Table Text Block]

Senior Secured Notes, net of unamortized discount and deferred financing costs, included within the Senior Notes, net line item on the accompanying balance sheets as of June 30, 2021, and December 31, 2020, consisted of the following:

	As of June 30, 2021
	Principal Amount		Unamortized Debt Discount		Unamortized Deferred Financing Costs		Net
	(in thousands)
1.50% Senior Secured Convertible Notes due 2021	$	65,485	$	—	$	—	$	65,485
10.0% Senior Secured Notes due 2025	446,675		34,208		10,145		402,322
Total	$	512,160	$	34,208	$	10,145	$	467,807
	As of December 31, 2020
	Principal Amount		Unamortized Debt Discount		Unamortized Deferred Financing Costs		Net
	(in thousands)
1.50% Senior Secured Convertible Notes due 2021	$	65,485	$	1,828	$	175	$	63,482
10.0% Senior Secured Notes due 2025	446,675		37,943		11,558		397,174
Total	$	512,160	$	39,771	$	11,733	$	460,656

Schedule Of Long-term Debt Instruments, Senior Unsecured Notes [Table Text Block]

Senior Unsecured Notes, net of unamortized deferred financing costs, included within the Senior Notes, net line item on the accompanying balance sheets as of June 30, 2021, and December 31, 2020, consisted of the following:

	As of June 30, 2021						As of December 31, 2020
	Principal Amount		Unamortized Deferred Financing Costs		Principal Amount, Net		Principal Amount		Unamortized Deferred Financing Costs		Principal Amount, Net
	(in thousands)
6.125% Senior Notes due 2022	$	—	$	—	$	—	$	212,403	$	855	$	211,548
5.0% Senior Notes due 2024	104,769		499		104,270		277,034		1,576		275,458
5.625% Senior Notes due 2025	349,118		2,476		346,642		349,118		2,792		346,326
6.75% Senior Notes due 2026	419,235		3,620		415,615		419,235		3,970		415,265
6.625% Senior Notes due 2027	416,791		4,337		412,454		416,791		4,725		412,066
6.5% Senior Notes due 2028	400,000		7,163		392,837		—		—		—
Total	$	1,689,913	$	18,095	$	1,671,818	$	1,674,581	$	13,918	$	1,660,663