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Loans Receivable and Allowance for Loan Losses (Allowance for Loan Losses and Recorded Investment in Financing Receivables) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance at beginning of period $ 7,298 $ 5,875 $ 5,708
Charge Offs (2,951) (3,198) (1,546)
Recoveries 66 41 33
Provision for Loan Losses 2,050 4,580 1,680
Allowance at end of period 6,463 7,298 5,875
Ending balance individually evaluated for impairment 3 1,613 293
Ending balance collectively evaluated for impairment 6,460 5,685 5,582
Residential Real Estate Loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance at beginning of period 1,069 1,323 1,441
Charge Offs (123) (224) (270)
Recoveries 6 20  
Provision for Loan Losses 140 (50) 152
Allowance at end of period 1,092 1,069 1,323
Ending balance individually evaluated for impairment 0 0  
Ending balance collectively evaluated for impairment 1,092 1,069 1,323
Commercial Real Estate Loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance at beginning of period 5,506 3,890 3,025
Charge Offs (2,711) (2,883) (1,196)
Recoveries 15 0 2
Provision for Loan Losses 1,813 4,499 2,059
Allowance at end of period 4,623 5,506 3,890
Ending balance individually evaluated for impairment 3 1,613 293
Ending balance collectively evaluated for impairment 4,620 3,893 3,597
Construction Real Estate Loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance at beginning of period 90 222 898
Charge Offs 0 0  
Recoveries 0 0  
Provision for Loan Losses (12) (132) (676)
Allowance at end of period 78 90 222
Ending balance individually evaluated for impairment 0 0  
Ending balance collectively evaluated for impairment 78 90 222
Commercial, financial and agricultural loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance at beginning of period 397 256 184
Charge Offs (15) 0  
Recoveries 0 0  
Provision for Loan Losses (75) 141 72
Allowance at end of period 307 397 256
Ending balance individually evaluated for impairment 0 0  
Ending balance collectively evaluated for impairment 307 397 256
Consumer loans to individuals [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Allowance at beginning of period 236 184 160
Charge Offs (102) (91) (80)
Recoveries 45 21 31
Provision for Loan Losses 184 122 73
Allowance at end of period 363 236 184
Ending balance individually evaluated for impairment 0 0  
Ending balance collectively evaluated for impairment $ 363 $ 236 $ 184