Net Earnings (Loss) Per Common Share Computation of Basic and Diluted Net Earnings (Loss) Per Common 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
Net Earnings (Loss) per Share—Basic
Average common shares outstanding		32,175	32,006	32,144	32,005
Net loss from continuing operations		$ (7,790)	$ (28,725)	$ (23,521)	$ (62,075)
Net earnings from discontinued operations		0	13,629	260	15,390
Net Loss		$ (7,790)	$ (15,096)	$ (23,261)	$ (46,685)
Net loss per common share from continuing operations (in dollars per share)		$ (0.24)	$ (0.90)	$ (0.73)	$ (1.94)
Net earnings per common share from discontinued operations (in dollars per share)		0.00	0.43	0.01	0.48
Net earnings (loss) per common share		$ (0.24)	$ (0.47)	$ (0.72)	$ (1.46)
Net Earnings (Loss) per Share—Assuming Dilution
Average common shares outstanding		32,175	32,006	32,144	32,005
Stock options and awards		540	188	511	211
Average common shares assuming dilution		32,715	32,194	32,655	32,216
Net loss from continuing operations		$ (7,790)	$ (28,725)	$ (23,521)	$ (62,075)
Net earnings from discontinued operations		0	13,629	260	15,390
Net Loss		$ (7,790)	$ (15,096)	$ (23,261)	$ (46,685)
Net loss per common share from continuing operations (in dollars per share)	[1]	$ (0.24)	$ (0.90)	$ (0.73)	$ (1.94)
Net earnings per common share from discontinued operations (in dollars per share)		0.00	0.42	0.01	0.48
Net earnings (loss) per per common share—assuming dilution (in dollars per share)	[1]	$ (0.24)	$ (0.47)	$ (0.72)	$ (1.46)

[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.