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Fair Value (Narrative) (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans held for sale $ 1,992,000   $ 1,992,000   $ 1,672,000
Unpaid principal balance of impairment loan at collateral 813,000   813,000   867,000
Valuation allowance 14,000   14,000   20,000
Write-downs of impaired collateral-dependent loans 0 $ 0 0 $ 0  
Credit Card Portfolio [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans held for sale 175,000,000   175,000,000    
Fair Value, Inputs, Level 1 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Assets measured at fair value on a recurring basis 0   0   0
Liabilities measured at fair value on a recurring basis 0   0   0
Assets measured at fair value on a nonrecurring basis 0   0   0
Liabilities measured at fair value on a nonrecurring basis 0   0   0
Fair Value, Inputs, Level 2 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans held for sale 1,992,000   1,992,000   1,672,000
Assets measured at fair value on a nonrecurring basis 0   0   0
Liabilities measured at fair value on a nonrecurring basis 0   0   0
Fair Value, Inputs, Level 2 [Member] | Construction Loans [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans held for sale 0   0   1,833,000
Fair Value, Inputs, Level 3 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Assets measured at fair value on a recurring basis 0   0   0
Liabilities measured at fair value on a recurring basis $ 0   $ 0   $ 0