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Loans, Net Loans identified as impaired by class of loan (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Recorded Investment [Abstract]    
With no related allowance recorded $ 9,162 $ 13,690
With an allowance recorded 11,682 8,468
Total 20,844 22,158
Unpaid Principal Balance [Abstract]    
With no related allowance recorded 9,232 13,818
With an allowance recorded 14,734 9,370
Total 23,966 23,188
Related Allowance [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 2,664 2,669
Total 2,664 2,669
Average Recorded Investment [Abstract]    
With no related allowance recorded 9,202 13,879
With an allowance recorded 13,644 8,892
Total 22,846 22,771
Interest Income Recognized [Abstract]    
With no related allowance recorded 254 592
With an allowance recorded 284 89
Total 538 681
Real Estate Loans Construction [Member]    
Recorded Investment [Abstract]    
With no related allowance recorded 100 131
With an allowance recorded 103 115
Unpaid Principal Balance [Abstract]    
With no related allowance recorded 100 131
With an allowance recorded 103 115
Related Allowance [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 53 66
Average Recorded Investment [Abstract]    
With no related allowance recorded 106 138
With an allowance recorded 109 124
Interest Income Recognized [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 0 0
Real Estate Loans Secured by Farmland [Member]    
Recorded Investment [Abstract]    
With no related allowance recorded 7,903 7,903
With an allowance recorded 0 0
Unpaid Principal Balance [Abstract]    
With no related allowance recorded 7,903 7,903
With an allowance recorded 0 0
Related Allowance [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 0 0
Average Recorded Investment [Abstract]    
With no related allowance recorded 7,903 7,903
With an allowance recorded 0 0
Interest Income Recognized [Abstract]    
With no related allowance recorded 237 454
With an allowance recorded 0 0
Real Estate Loans Secured by 1 - 4 Family Residential [Member]    
Recorded Investment [Abstract]    
With no related allowance recorded 701 1,919
With an allowance recorded 4,426 3,694
Unpaid Principal Balance [Abstract]    
With no related allowance recorded 736 2,047
With an allowance recorded 4,478 3,746
Related Allowance [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 1,120 1,370
Average Recorded Investment [Abstract]    
With no related allowance recorded 703 2,032
With an allowance recorded 4,547 3,704
Interest Income Recognized [Abstract]    
With no related allowance recorded 0 16
With an allowance recorded 27 11
Other Real Estate Loans [Member]    
Recorded Investment [Abstract]    
With no related allowance recorded 0 3,289
With an allowance recorded 4,196 1,242
Unpaid Principal Balance [Abstract]    
With no related allowance recorded 0 3,289
With an allowance recorded 4,196 1,242
Related Allowance [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 464 294
Average Recorded Investment [Abstract]    
With no related allowance recorded 0 3,352
With an allowance recorded 4,224 1,260
Interest Income Recognized [Abstract]    
With no related allowance recorded 0 104
With an allowance recorded 157 69
Commercial Loans [Member]    
Recorded Investment [Abstract]    
With no related allowance recorded 458 448
With an allowance recorded 1,059 398
Unpaid Principal Balance [Abstract]    
With no related allowance recorded 493 448
With an allowance recorded 4,059 1,248
Related Allowance [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 27 292
Average Recorded Investment [Abstract]    
With no related allowance recorded 490 454
With an allowance recorded 2,315 783
Interest Income Recognized [Abstract]    
With no related allowance recorded 17 18
With an allowance recorded 100 7
Consumer Loans [Member]    
Recorded Investment [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 1,898 3,019
Unpaid Principal Balance [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 1,898 3,019
Related Allowance [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 1,000 647
Average Recorded Investment [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded 2,449 3,021
Interest Income Recognized [Abstract]    
With no related allowance recorded 0 0
With an allowance recorded $ 0 $ 2