Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following items are measured at fair value on a recurring basis subject to the disclosure requirements of ASC 820 at March 31, 2014 and December 31, 2013:

	Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	March 31, 2014		(Level 1)		(Level 2)		(Level 3)
Liabilities
2018 Senior unsecured notes	$	182,767	$	—	$	182,767	$	—
2021 Senior unsecured notes	263,786		—		263,786		—
Total liabilities	$	446,553	$	—	$	446,553	$	—

	Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	December 31, 2013		(Level 1)		(Level 2)		(Level 3)
Liabilities
2018 Senior unsecured notes	$	185,816	$	—	$	185,816	$	—
2021 Senior unsecured notes	258,004		—		258,004		—
Total liabilities	$	443,820	$	—	$	443,820	$	—