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Pension Plan (Schedule of Other Changes in Plan Assets and Benefit Obligations) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]    
Net gain / (loss) $ 108 $ (329)
Amortization of prior service cost 7 8
Amortization of gain 44 35
Amortization of transitional asset 11 12
Total, pre tax 170 (274)
Taxes 46 (76)
Total recognized in other comprehensive income, net of taxes $ 124 $ (198)