Other Intangible Assets Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount       $ 8,451 $ 8,413
Accumulated Amortization       (5,344) (4,788)
Net Carrying Amount $ 3,625 $ 4,140 $ 4,492 3,107 3,625
Finite-lived Intangible Assets [Roll Forward]          
Finite-Lived Intangible Assets, Beginning Balance 3,625 4,140 4,492    
Intangible Assets Acquired 107 133 331    
Impairment of Intangible Assets, Finite-lived (38)        
Amortization of Intangible Assets (587) (648) (683)    
Finite-Lived Intangible Assets, Ending Balance 3,107 3,625 4,140    
Depositor Intangibles [Member]          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount [1]       2,247 2,247
Accumulated Amortization [1]       (2,247) (2,237)
Net Carrying Amount [1] 10 61 153 0 10
Finite-lived Intangible Assets [Roll Forward]          
Finite-Lived Intangible Assets, Beginning Balance [1] 10 61 153    
Intangible Assets Acquired [1] 0 0 0    
Impairment of Intangible Assets, Finite-lived 0        
Amortization of Intangible Assets [1] (10) (51) (92)    
Finite-Lived Intangible Assets, Ending Balance [1] 0 10 61    
Mortgage Servicing Rights [Member]          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount [2]       1,822 1,715
Accumulated Amortization [2]       (1,143) (883)
Net Carrying Amount [2] 832 960 859 679 832
Finite-lived Intangible Assets [Roll Forward]          
Finite-Lived Intangible Assets, Beginning Balance [2] 832 960 859    
Intangible Assets Acquired [2] 107 133 331    
Impairment of Intangible Assets, Finite-lived [2] 0        
Amortization of Intangible Assets [2] (260) (261) (230)    
Finite-Lived Intangible Assets, Ending Balance [2] 679 832 960    
Customer Intangibles [Member]          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount [1]       4,382 4,451
Accumulated Amortization [1]       (1,954) (1,668)
Net Carrying Amount [1] 2,783 3,119 3,480 $ 2,428 $ 2,783
Finite-lived Intangible Assets [Roll Forward]          
Finite-Lived Intangible Assets, Beginning Balance [1] 2,783 3,119 3,480    
Intangible Assets Acquired [1] 0 0 0    
Impairment of Intangible Assets, Finite-lived [1] (38)        
Amortization of Intangible Assets [1] (317) (336) (361)    
Finite-Lived Intangible Assets, Ending Balance [1] $ 2,428 $ 2,783 $ 3,119    
[1] Amortization of depositor intangibles and customer intangibles are reported in the consolidated statements of income as a component of other operating expense.
[2] Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers.