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Other Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Finite-lived Intangible Assets [Roll Forward]    
Beginning Balance $ 4,159 $ 4,586
Amortization expense (106) (107)
Ending Balance 4,053 4,479
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
Remainder of 2013 321  
2014 427  
2015 427  
2016 427  
2017 427  
2018 $ 427