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Intangibles (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]      
Intangible Assets, Gross (Excluding Goodwill) $ 7,551us-gaap_IntangibleAssetsGrossExcludingGoodwill $ 7,551us-gaap_IntangibleAssetsGrossExcludingGoodwill  
Finite-Lived Intangible Assets, Accumulated Amortization (3,366)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization (2,810)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization  
Intangible Assets, Net (Excluding Goodwill) 4,185us-gaap_IntangibleAssetsNetExcludingGoodwill 4,741us-gaap_IntangibleAssetsNetExcludingGoodwill  
Amortization of Intangible Assets 600us-gaap_AmortizationOfIntangibleAssets 531us-gaap_AmortizationOfIntangibleAssets 520us-gaap_AmortizationOfIntangibleAssets
Finite-Lived Intangible Asset, Useful Life 7 years 6 months 8 years 6 months 5 days  
Finite-Lived Intangible Assets, Gross [Abstract]      
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 556us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 556us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 556us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 556us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour    
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 556us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive    
Minimum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 7 years    
Maximum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 15 years