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Other Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Finite-lived Intangible Assets [Roll Forward]        
Beginning Balance $ 4,479 $ 4,906 $ 4,586 $ 5,013
Amortization expense (106) (107) (213) (214)
Ending Balance 4,373 4,799 4,373 4,799
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]        
Remainder of 2012 214   214  
2013 427   427  
2014 427   427  
2015 427   427  
2016 427   427  
2017 $ 427   $ 427