Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Carrying Amount of Components of Long-term Debt

The following table summarizes our long-term debt as of the dates presented giving effect to the adoption of ASU 2015–03:

	As of
	September 30, 2015				December 31, 2014
	Principal		Unamortized Issuance Costs		Principal		Unamortized Issuance Costs
Revolving credit facility 1	$	140,000			$	35,000
Senior notes due 2019	300,000		$	3,510	300,000		$	4,131
Senior notes due 2020	775,000		18,128		775,000		20,440
Totals	1,215,000		$	21,638	1,110,000		$	24,571
Long-term debt, net of unamortized issuance costs	$	1,193,362			$	1,085,429

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¹ Issuance costs attributable to the Revolver, which represent costs attributable to the access to credit over the Revolver’s contractual term, are presented as a component of Other assets (see Note 10) in accordance with ASU 2015-15.