Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of Obligations Under Debt Arrangements

At December 31, 2017 and 2016, our obligations under debt arrangements consisted of the following:

	December 31, 2017						December 31, 2016
	Principal		Unamortized Discount and Debt Issuance Costs		Net Value		Principal		Unamortized Discount and Debt Issuance Costs		Net Value
Senior secured credit facility	$	1,099,200	$	—	$	1,099,200	$	1,278,200	$	—	1,278,200
5.750% senior unsecured notes	145,170		1,303		143,867		350,000		4,163		345,837
6.750% senior unsecured notes	750,000		16,077		733,923		750,000		19,296		730,704
6.000% senior unsecured notes	400,000		5,691		394,309		400,000		6,758		393,242
5.625% senior unsecured notes	350,000		5,717		344,283		350,000		6,614		343,386
6.500% senior unsecured notes	550,000		9,462		540,538		—		—		—
6.250% senior unsecured notes	450,000		$	8,002	441,998		—		—		—
Total long-term debt	$	3,744,370	$	46,252	$	3,698,118	$	3,128,200	$	36,831	$	3,091,369

Schedule of Summary of Applicable Redemption Periods

A summary of the applicable redemption periods is provided in the table below.    

	2021 Notes	2022 Notes	2023 Notes	2024 Notes	2025 Notes	2026 Notes
Redemption right beginning on	February 15, 2017	August 1, 2018	May 15, 2018	June 15, 2019	October 1, 2020	February 15, 2021
Redemption of up to 35% of the principal amount of notes with the proceeds of an equity offering permitted prior to	February 15, 2017	August 1, 2018	May 15, 2018	June 15, 2019	October 1, 2020	February 15, 2021