Supplemental Guarantor Information - Consolidating Condensed Statements of Operations (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Feb. 17, 2007
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 283,265,000	$ 283,776,000	$ 286,273,000	$ 289,024,000	$ 318,199,000	$ 320,520,000	$ 326,943,000	$ 304,501,000	$ 1,142,338,000	$ 1,270,163,000	$ 1,334,505,000
Cost of products sold									829,514,000	922,775,000	967,079,000
Gross Profit	80,803,000	77,639,000	77,287,000	77,095,000	88,370,000	84,647,000	91,578,000	82,793,000	312,824,000	347,388,000	367,426,000
Selling, general and administrative expenses									319,847,000	383,913,000	397,332,000
Charges related to restructuring activities									1,971,000	11,112,000	9,336,000
Asset write-downs to intangibles and goodwill									0	13,041,000	1,523,000
Income (loss) from equity investee									0	0	0
Interest expense, net									2,746,000	2,532,000	2,694,000
Earnings before income taxes	581,000	(790,000)	(6,492,000)	(5,039,000)	(8,385,000)	(26,375,000)	(11,580,000)	(16,870,000)	(11,740,000)	(63,210,000)	(43,459,000)
Income taxes (benefit)									14,710,000	5,550,000	10,875,000
Net Loss from Continuing Operations	(2,929,000)	(7,790,000)	(8,217,000)	(7,514,000)	(6,685,000)	(28,725,000)	(14,455,000)	(18,895,000)	(26,450,000)	(68,760,000)	(54,334,000)
Net Earnings from Discontinued Operations	0	0	0	260,000	(2,700,000)	13,629,000	842,000	919,000	260,000	12,690,000	87,385,000
Net Earnings (loss)	$ (2,929,000)	$ (7,790,000)	$ (8,217,000)	$ (7,254,000)	$ (9,385,000)	$ (15,096,000)	$ (13,613,000)	$ (17,976,000)	(26,190,000)	(56,070,000)	33,051,000
Other Comprehensive Income (Loss), net of Tax									(81,006,000)	(53,537,000)	12,413,000
Comprehensive Income (Loss)									(107,196,000)	(109,607,000)	45,464,000
The Company (Parent)
Condensed Financial Statements, Captions [Line Items]
Net sales									211,178,000	213,072,000	241,871,000
Cost of products sold									187,272,000	192,566,000	211,896,000
Gross Profit									23,906,000	20,506,000	29,975,000
Selling, general and administrative expenses									111,814,000	119,904,000	123,377,000
Charges related to restructuring activities									1,339,000	9,672,000	6,356,000
Asset write-downs to intangibles and goodwill										0	0
Income (loss) from equity investee									69,636,000	53,536,000	133,350,000
Interest expense, net									3,011,000	175,000	(1,661,000)
Earnings before income taxes									(22,622,000)	(55,709,000)	35,253,000
Income taxes (benefit)									3,568,000	361,000	2,202,000
Net Loss from Continuing Operations									(26,190,000)	(56,070,000)	33,051,000
Net Earnings from Discontinued Operations									0	0	0
Net Earnings (loss)									(26,190,000)	(56,070,000)	33,051,000
Other Comprehensive Income (Loss), net of Tax									(81,006,000)	(53,537,000)	12,413,000
Comprehensive Income (Loss)									(107,196,000)	(109,607,000)	45,464,000
Combined Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net sales									402,108,000	413,067,000	460,960,000
Cost of products sold									305,592,000	314,562,000	338,650,000
Gross Profit									96,516,000	98,505,000	122,310,000
Selling, general and administrative expenses									63,068,000	81,676,000	93,731,000
Charges related to restructuring activities									0	(1,326,000)	79,000
Asset write-downs to intangibles and goodwill										13,041,000	1,250,000
Income (loss) from equity investee									29,353,000	35,208,000	29,644,000
Interest expense, net									428,000	2,114,000	3,353,000
Earnings before income taxes									62,373,000	38,208,000	53,541,000
Income taxes (benefit)									0	0	(1,785,000)
Net Loss from Continuing Operations									62,373,000	38,208,000	55,326,000
Net Earnings from Discontinued Operations									260,000	12,690,000	87,385,000
Net Earnings (loss)									62,633,000	50,898,000	142,711,000
Other Comprehensive Income (Loss), net of Tax									(15,037,000)	(5,057,000)	(2,309,000)
Comprehensive Income (Loss)									47,596,000	45,841,000	140,402,000
Combined Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net sales									649,966,000	740,669,000	720,978,000
Cost of products sold									457,634,000	512,521,000	506,308,000
Gross Profit									192,332,000	228,148,000	214,670,000
Selling, general and administrative expenses									144,965,000	182,416,000	177,530,000
Charges related to restructuring activities									632,000	2,766,000	2,901,000
Asset write-downs to intangibles and goodwill										0	273,000
Income (loss) from equity investee									703,000	280,000	286,000
Interest expense, net									(693,000)	243,000	1,002,000
Earnings before income taxes									48,131,000	43,003,000	33,250,000
Income taxes (benefit)									11,142,000	5,189,000	10,458,000
Net Loss from Continuing Operations									36,989,000	37,814,000	22,792,000
Net Earnings from Discontinued Operations									0	0	0
Net Earnings (loss)									36,989,000	37,814,000	22,792,000
Other Comprehensive Income (Loss), net of Tax									(67,842,000)	(50,058,000)	17,797,000
Comprehensive Income (Loss)									(30,853,000)	(12,244,000)	40,589,000
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales									(120,914,000)	(96,645,000)	(89,304,000)
Cost of products sold									(120,984,000)	(96,874,000)	(89,775,000)
Gross Profit									70,000	229,000	471,000
Selling, general and administrative expenses									0	(83,000)	2,694,000
Charges related to restructuring activities									0	0	0
Asset write-downs to intangibles and goodwill										0	0
Income (loss) from equity investee									(99,692,000)	(89,024,000)	(163,280,000)
Interest expense, net									0	0	0
Earnings before income taxes									(99,622,000)	(88,712,000)	(165,503,000)
Income taxes (benefit)									0	0	0
Net Loss from Continuing Operations									(99,622,000)	(88,712,000)	(165,503,000)
Net Earnings from Discontinued Operations									0	0	0
Net Earnings (loss)									(99,622,000)	(88,712,000)	(165,503,000)
Other Comprehensive Income (Loss), net of Tax									82,879,000	55,115,000	(15,488,000)
Comprehensive Income (Loss)									$ (16,743,000)	$ (33,597,000)	$ (180,991,000)
Convertible Senior Subordinated Debentures February 2027 | Convertible Subordinated Debt
Condensed Financial Statements, Captions [Line Items]
Interest rate (as a percent)	4.125%								4.125%
Principal Amount												$ 135,000,000