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Loans and Allowance for Loan Losses (Details 6) - All Other Loans [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Financing Receivable, Impaired [Line Items]    
Impaired loans without a valuation allowance, Recorded Investment $ 1,851 $ 6,675
Impaired loans without a valuation allowance, Unpaid Principal Balance 1,879 7,375
Impaired loans without a valuation allowance, Average Recorded Investment 4,659 6,999
Impaired loans without a valuation allowance, Interest Income Recognized 180 183
Impaired loans with a valuation allowance, Recorded Investment 164 418
Impaired loans with a valuation allowance, Unpaid Principal Balance 243 418
Impaired loans with a valuation allowance, Related Allowance 4 258
Impaired loans with a valuation allowance, Average Recorded Investment 306 448
Impaired loans with a valuation allowance, Interest Income Recognized 70 0
Total impaired loans, Recorded Investment 2,015 7,093
Total impaired loans, Unpaid Principal Balance 2,122 7,793
Total impaired loans, Average Recorded Investment 4,965 7,447
Total impaired loans, Interest Income Recognized 250 183
Commercial Real Estate [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired loans without a valuation allowance, Recorded Investment 119 1,952
Impaired loans without a valuation allowance, Unpaid Principal Balance 119 1,952
Impaired loans without a valuation allowance, Average Recorded Investment 1,311 1,898
Impaired loans without a valuation allowance, Interest Income Recognized 73 73
Impaired loans with a valuation allowance, Recorded Investment 0 0
Impaired loans with a valuation allowance, Unpaid Principal Balance 0 0
Impaired loans with a valuation allowance, Related Allowance 0 0
Impaired loans with a valuation allowance, Average Recorded Investment 0 0
Impaired loans with a valuation allowance, Interest Income Recognized 0 0
Consumer Real Estate [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired loans without a valuation allowance, Recorded Investment 821 3,641
Impaired loans without a valuation allowance, Unpaid Principal Balance 849 4,341
Impaired loans without a valuation allowance, Average Recorded Investment 2,334 4,003
Impaired loans without a valuation allowance, Interest Income Recognized 100 81
Impaired loans with a valuation allowance, Recorded Investment 0 0
Impaired loans with a valuation allowance, Unpaid Principal Balance 0 0
Impaired loans with a valuation allowance, Related Allowance 0 0
Impaired loans with a valuation allowance, Average Recorded Investment 0 0
Impaired loans with a valuation allowance, Interest Income Recognized 0 0
Construction and Land Development [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired loans without a valuation allowance, Recorded Investment 865 1,033
Impaired loans without a valuation allowance, Unpaid Principal Balance 865 1,033
Impaired loans without a valuation allowance, Average Recorded Investment 967 1,044
Impaired loans without a valuation allowance, Interest Income Recognized 3 26
Impaired loans with a valuation allowance, Recorded Investment 0 0
Impaired loans with a valuation allowance, Unpaid Principal Balance 0 0
Impaired loans with a valuation allowance, Related Allowance 0 0
Impaired loans with a valuation allowance, Average Recorded Investment 0 0
Impaired loans with a valuation allowance, Interest Income Recognized 0 0
Commercial and Industrial [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired loans without a valuation allowance, Recorded Investment 46 49
Impaired loans without a valuation allowance, Unpaid Principal Balance 46 49
Impaired loans without a valuation allowance, Average Recorded Investment 47 54
Impaired loans without a valuation allowance, Interest Income Recognized 4 3
Impaired loans with a valuation allowance, Recorded Investment 164 418
Impaired loans with a valuation allowance, Unpaid Principal Balance 243 418
Impaired loans with a valuation allowance, Related Allowance 4 258
Impaired loans with a valuation allowance, Average Recorded Investment 306 448
Impaired loans with a valuation allowance, Interest Income Recognized 70 0
Consumer and Other [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired loans without a valuation allowance, Recorded Investment 0 0
Impaired loans without a valuation allowance, Unpaid Principal Balance 0 0
Impaired loans without a valuation allowance, Average Recorded Investment 0 0
Impaired loans without a valuation allowance, Interest Income Recognized 0 0
Impaired loans with a valuation allowance, Recorded Investment 0 0
Impaired loans with a valuation allowance, Unpaid Principal Balance 0 0
Impaired loans with a valuation allowance, Related Allowance 0 0
Impaired loans with a valuation allowance, Average Recorded Investment 0 0
Impaired loans with a valuation allowance, Interest Income Recognized $ 0 $ 0