Current Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Salaries and Wages	$ 40,019	$ 40,252
Taxes other than income taxes, primarily Value Added Taxes	21,827	24,525
Product Warranty Accrual, Current	27,540	27,393
Freight	7,372	7,636
Professional	7,393	6,516
Product Liability, Current Portion	3,403	3,183
Rebates	1,957	1,681
Insurance	2,535	2,549
Interest	842	1,041
Derivative Liabilities	2,321	1,212
Severance	3,755	3,986
Other items, principally trade accruals	12,381	13,126
Accrued expenses	$ 131,345	$ 133,100