Current Liabilities Components of Current Liabilities (Details) - USD ($)	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Salaries and wages	$ 36,358,000	$ 40,850,000
Taxes other than income taxes, primarily Value Added Taxes	20,767,000	24,743,000
Warranty cost	26,682,000	30,738,000
Supplemental Executive Retirement Program	391,000	21,517,000
Freight	6,273,000	6,202,000
Professional	8,135,000	6,613,000
Product liability, current portion	3,727,000	4,334,000
Rebates	1,899,000	1,722,000
Insurance	1,294,000	1,266,000
Interest	783,000	1,068,000
Derivative liabilities	2,235,000	2,526,000
Severance	2,225,000	4,209,000
Other items, principally trade accruals	12,560,000	9,911,000
Accrued expenses	123,329,000	$ 155,699,000
Payments for deferred compensation, Cash Based Arrangement	21,126,000
Payments for deferred compensation arrangements	$ 3,525,000