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Exit Activity Costs And Asset Impairments (Summary Of Exit Activity Costs And Asset Impairments) (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Total exit activity costs and asset impairments $ 790,000 $ 494,000 $ 1,658,000 $ 541,000
Facility Closing [Member]
       
Asset impairment charges related to sales of facility     198,000 430,000
Cost of Sales [Member]
       
Total exit activity costs and asset impairments 317,000 417,000 1,175,000 464,000
Selling General and Administrative Expense [Member]
       
Total exit activity costs and asset impairments $ 473,000 $ 77,000 $ 483,000 $ 77,000