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Other Current Liabilities (Changes In Product Warranty Obligations) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Other Current Liabilities [Abstract]      
Beginning of year $ 1,151 $ 1,304 $ 1,150
New warranties 2,472 2,152 2,327
Reductions (2,175) (2,305) (2,173)
Balance at end of year $ 1,448 $ 1,151 $ 1,304