Interim Financial Information - (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 318,199	$ 320,520	$ 326,943	$ 304,501	$ 330,846	$ 336,578	$ 340,096	$ 326,985	$ 1,270,163		$ 1,334,505		$ 1,415,818
Gross profit	88,370	84,647	91,578	82,793	91,283	94,207	90,911	91,025	347,388		367,426		426,937
Earnings before income taxes	(8,385)	(26,375)	(11,580)	(16,870)	(7,564)	(6,004)	(15,331)	(14,560)	(63,210)		(43,459)		1,072
Net Loss from Continuing Operations	(6,685)	(28,725)	(14,455)	(18,895)	(16,009)	(6,274)	(25,446)	(6,605)	(68,760)		(54,334)		(14,083)
Net Earnings from Discontinued Operations	(2,700)	13,629	842	919	10,239	22,376	12,985	41,785	12,690		87,385		15,910
Net earnings (loss)	$ (9,385)	$ (15,096)	$ (13,613)	$ (17,976)	$ (5,770)	$ 16,102	$ (12,461)	$ 35,180	$ (56,070)		$ 33,051		$ 1,827
Net loss from continuing operations - Basic (in dollars per share)	$ (0.21)	$ (0.90)	$ (0.45)	$ (0.59)	$ (0.50)	$ (0.20)	$ (0.80)	$ (0.21)	$ (2.15)		$ (1.70)		$ (0.45)
Net earnings (loss) from discontinued operations - Basic (in dollars per share	$ (0.08)	$ 0.43	$ 0.03	$ 0.03	$ 0.32	$ 0.70	$ 0.41	$ 1.31	$ 0.40		$ 2.74		$ 0.50
Net earnings (loss) per share - basic	$ (0.29)	$ (0.47)	$ (0.43)	$ (0.56)	$ (0.18)	$ 0.50	$ (0.39)	$ 1.10	$ (1.75)		$ 1.04		$ 0.06
Net loss from continuing operations assuming dilution (in dollars per share)	$ (0.21)	$ (0.90)	$ (0.45)	$ (0.59)	$ (0.50)	$ (0.20)	$ (0.80)	$ (0.21)	$ (2.15)	[1]	$ (1.70)	[1]	$ (0.45)	[1]
Net earnings (loss) from discontinued operations assuming dilution (in dollars per share)	$ (0.08)	$ 0.42	$ 0.03	$ 0.03	$ 0.32	$ 0.70	$ 0.41	$ 1.31	$ 0.39		$ 2.73		$ 0.50
Net Earnings (loss) per Share - Assuming Dilution (in dollars per share)	$ (0.29)	$ (0.47)	$ (0.43)	$ (0.56)	$ (0.18)	$ 0.50	$ (0.39)	$ 1.10	$ (1.75)	[1]	$ 1.03	[1]	$ 0.06	[1]

[1] Net earnings (loss) per share assuming dilution calculated utilizing weighted average shares outstanding - basic in periods in which there is a net loss.