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Other Income, Net (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Other Income, Net [Abstract]    
Gain on expiration/settlement of customer advances $ 1,952 $ 3,463
All other, net (360) 22
Total other income, net $ 1,592 $ 3,485