Earnings Per Share - (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Numerator:
Net loss	$ (72,298)	$ (3,799)	$ (88,296)	$ (14,421)
Denominator:
Weighted average common shares outstanding	23,351	23,212	23,337	23,152
Effect of dilutive securities:
Outstanding common stock equivalents	0	0	0	0
Denominator for diluted earnings per share	23,351	23,212	23,337	23,152
Basic loss per share	$ (3.10)	$ (0.16)	$ (3.78)	$ (0.62)
Diluted loss per share	$ (3.10)	$ (0.16)	$ (3.78)	$ (0.62)
Excluded outstanding share-based awards having an anti-dilutive effect	630	1,083	630	1,083
Convertible Debt Securities
Effect of dilutive securities:
Excluded outstanding share-based awards having an anti-dilutive effect	1,024	2,265	1,332	2,208