Earnings Per Share - (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator:
Net loss	$ (26,300)	$ (7,325)	$ (105,926)	$ (95,621)
Denominator:
Weighted average common shares outstanding	23,580	23,359	23,535	23,345
Effect of dilutive securities:
Outstanding common stock equivalents	0	0	0	0
Denominator for diluted earnings per share	23,580	23,359	23,535	23,345
Basic loss per share	$ (1.12)	$ (0.31)	$ (4.50)	$ (4.10)
Diluted loss per share	$ (1.12)	$ (0.31)	$ (4.50)	$ (4.10)
Excluded outstanding share-based awards having an anti-dilutive effect	1,049	481	1,049	481
Convertible Debt Securities
Effect of dilutive securities:
Excluded outstanding share-based awards having an anti-dilutive effect	0	0	0	903