Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Carrying Amount of Components of Long-term Debt

The following table summarizes our long-term debt as of the dates presented:

	As of December 31,
	2014		2013
Revolving credit facility	$	35,000	$	206,000
Senior notes due 2019	300,000		300,000
Senior notes due 2020	775,000		775,000
	$	1,110,000	$	1,281,000