Net Earnings (Loss) Per Common Share Computation of Basic and Diluted Net Earnings (Loss) Per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Net Earnings (Loss) per Share—Basic
Average common shares outstanding	32,125		32,013
Net loss from continuing operations	$ (7,514)		$ (18,895)
Net earnings from discontinued operations	260		919
Net Loss	(7,254)		(17,976)
Net loss per common share from continuing operations (in dollars per share)	$ (0.23)		$ (0.59)
Net earnings per common share from discontinued operations (in dollars per share)	$ 0.01		$ 0.03
Net earnings (loss) per common share	$ (0.23)		$ (0.56)
Net Earnings (Loss) per Share—Assuming Dilution
Average common shares outstanding	32,125		32,013
Stock options and awards	264		288
Average common shares assuming dilution	32,389		32,301
Net loss from continuing operations	(7,514)		(18,895)
Net earnings from discontinued operations	260		919
Net Loss	$ (7,254)		$ (17,976)
Net loss per common share from continuing operations (in dollars per share)	$ (0.23)	[1]	$ (0.59)	[1]
Net earnings per common share from discontinued operations (in dollars per share)	$ 0.01		$ 0.03
Net earnings (loss) per per common share—assuming dilution (in dollars per share)	$ (0.23)	[1]	$ (0.56)	[1]

[1] Net loss per common share assuming dilution calculated utilizing weighted average shares outstanding-basic for the periods in which there was a net loss.