Other Current Liabilities (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Taxes, other than income taxes	$ 6,565	$ 4,768
Warranty	9,663	9,357
Deferred revenue	2,303	1,878
Rebates	7,647	6,983
Freight	4,593	3,999
Miscellaneous accrued expenses	8,492	8,115
Other	4,813	3,744
Total	44,076	38,844
Changes in warranty reserves
Beginning balance	9,357	8,759	7,043
Product warranty provision	10,649	12,395	12,815
(Divested) acquired reserves	0	(236)	10
Foreign currency	(48)	(15)	(63)
Claims paid	(10,295)	(11,546)	(11,046)
Ending balance	$ 9,663	$ 9,357	$ 8,759