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Other Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Finite-lived Intangible Assets [Roll Forward]        
Beginning Balance $ 4,373 $ 4,799 $ 4,586 $ 5,013
Amortization expense (107) (106) (320) (320)
Ending Balance 4,266 4,693 4,266 4,693
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]        
Remainder of 2012 107   107  
2013 427   427  
2014 427   427  
2015 427   427  
2016 427   427  
2017 $ 427   $ 427