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				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Net Earnings (Loss) per Share—Basic
Average common shares outstanding	32,006		31,902		32,005		31,902
Net loss from continuing operations	$ (28,725)		$ (6,274)		$ (62,075)		$ (38,325)
Net earnings from discontinued operations	13,629		22,376		15,390		77,146
Net Earnings (Loss)	(15,096)		16,102		(46,685)		38,821
Net loss per common share from continuing operations (in dollars per share)	$ (0.90)		$ (0.20)		$ (1.94)		$ (1.20)
Net earnings per common share from discontinued operations (in dollars per share)	$ 0.43		$ 0.70		$ 0.48		$ 2.42
Net earnings (loss) per common share	$ (0.47)		$ 0.50		$ (1.46)		$ 1.22
Net Earnings (Loss) per Share—Assuming Dilution
Average common shares outstanding	32,006		31,902		32,005		31,902
Stock options and awards	188		164		211		107
Average common shares assuming dilution	32,194		32,066		32,216		32,009
Net loss from continuing operations	(28,725)		(6,274)		(62,075)		(38,325)
Net earnings from discontinued operations	13,629		22,376		15,390		77,146
Net Earnings (Loss)	$ (15,096)		$ 16,102		$ (46,685)		$ 38,821
Net loss per common share from continuing operations (in dollars per share)	$ (0.90)	[1]	$ (0.20)	[1]	$ (1.94)	[1]	$ (1.20)	[1]
Net earnings per common share from discontinued operations (in dollars per share)	$ 0.42		$ 0.70		$ 0.48		$ 2.41
Net earnings (loss) per per common share—assuming dilution (in dollars per share)	$ (0.47)	[1]	$ 0.50	[1]	$ (1.46)	[1]	$ 1.21	[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.