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Consolidated Statements Of Operations (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Consolidated Statements Of Operations [Abstract]      
Net sales $ 138,835 $ 135,264 $ 116,125
Cost of goods sold 103,637 99,273 92,345
Gross profit 35,198 35,991 23,780
Selling, general and administrative expense 24,268 23,241 22,250
Other operating income (expense):      
Assets held for sale write-down (1,135) (500) (717)
Litigation settlement gain 7,468    
Litigation expense (227) (2,388) (4,613)
Facility consolidation costs (1,973) (177)  
Currency transaction gains (losses), net 410 (354) (236)
Operating income (loss) 15,473 9,331 (4,036)
Other non-operating income, net 424 379 45
Interest expense (804) (914) (1,060)
Income (loss) before income taxes 15,093 8,796 (5,051)
Provision (benefit) for income taxes 7,420 5,744 (3,058)
Net income (loss) $ 7,673 $ 3,052 $ (1,993)
Basic and diluted earnings (loss) per common share $ 0.62 $ 0.25 $ (0.16)
Cash dividends per share $ 0.50 $ 0.50 $ 0.50
Basic and diluted weighted average shares outstanding 12,382 12,373 12,367