Interim Financial Information Narrative (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net Income (Loss) Attributable to Parent	$ (5,770,000)	$ 16,102,000	$ (12,462,000)	$ 35,181,000	$ (7,293,000)	$ 2,864,000	$ (1,977,000)	$ 8,233,000	$ 33,051,000	$ 1,827,000	$ (4,113,000)
Income Tax Expense (Benefit), Intraperiod Tax Allocation, Per Diluted Share	$ 0.32				$ 0.07
Gains (Losses) on Extinguishment of Debt							(312,000)		0	(312,000)	(24,200,000)
Extinguishment of Debt, Gain (Loss), Net of Tax							(312,000)
Extinguishment of Debt, Gain (Loss), Per Share, Net of Tax							$ (0.01)
Income Tax Expense (Benefit), Intraperiod Tax Allocation	10,000,000				2,200,000				1,220,000	7,126,000
Income Tax Examination, Foreign Income Tax Expense (Benefit)											4,947,000
Restructuring Charges	2,338,000	1,884,000	2,592,000	2,522,000	7,653,000	1,175,000	2,006,000	561,000	9,336,000	10,904,000	10,257,000
Restructuring Charges, Net of Tax	1,991,000	1,765,000	1,899,000	1,838,000	7,623,000	1,129,000	2,086,000	391,000
Restructuring Charges, Net of Tax, Per Diluted Share	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.24	$ 0.04	$ 0.07	$ 0.01
Income Tax Expense (Benefit)		3,800,000							12,660,000	16,775,000	9,280,000
Income Tax Expense (Benefit), Per Diluted Share		$ 0.12
Product Warranty Expense	3,402,000		3,862,000
Product Warranty Expense, net of tax	3,308,000		3,862,000
Product Warranty Expense, net of tax, per diluted share	$ 0.10		$ 0.12
Liability for Uncertain Tax Positions, Noncurrent	15,524,000	3,100,000	9,700,000		13,430,000		9,010,000		15,524,000	13,430,000
Liability for Uncertain Tax Positions, Noncurrent, Per Diluted Share		$ 0.10	$ 0.30				$ 0.28
Goodwill and Intangible Asset Impairment	1,356,000	167,000			773,000				1,523,000	773,000	49,480,000
Goodwill and Intangible Asset Impairment, Net of Tax	$ 1,155,000	$ 167,000			$ 698,000
Goodwill and Intangible Asset Impairment, Net of Tax, Per Diluted Share	$ 0.04	$ 0.01			$ 0.02