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Other Current Liabilities (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Other Current Liabilities [Abstract] |  |  |
Taxes, other than income taxes | $ 5,629 | $ 5,654 |
Warranty | 8,759 | 7,043 |
Deferred revenue | 3,159 | 2,740 |
Rebates | 5,185 | 4,927 |
Freight | 3,945 | 4,257 |
Restructuring | 835 | 1,798 |
Miscellaneous accrued expenses | 8,974 | 11,401 |
Other | 2,918 | 2,882 |
Total | 39,404 | 40,702 |
Changes in warranty reserves [Roll Forward] |  |  |
Beginning balance | 7,043 | 5,985 | 6,018
Product warranty provision | 12,815 | 10,506 | 8,092
Acquired reserves | 10 | 0 | 17
Foreign currency | (63) | (88) | 133
Claims paid | (11,046) | (9,360) | (8,275)
Ending balance | $ 8,759 | $ 7,043 | $ 5,985

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