v3.5.0.2
Allowance for Loan Losses - Bank's Allowance for Loan Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Financing Receivable Allowance For Credit Losses [Line Items]          
Beginning Balance $ 12,200   $ 10,600 $ 10,150 $ 10,150
Provision for loan losses 1,231 $ 570 2,881 1,473 2,673
Charge-offs     (50)   (2,223)
Recoveries 169   169    
Ending Balance 13,600   13,600   10,600
Residential Properties          
Financing Receivable Allowance For Credit Losses [Line Items]          
Beginning Balance 5,353   6,799 6,546 6,546
Provision for loan losses 951   (495)   253
Ending Balance 6,304   6,304   6,799
Commercial Real Estate          
Financing Receivable Allowance For Credit Losses [Line Items]          
Beginning Balance 1,887   1,813 1,499 1,499
Provision for loan losses 572   696   624
Charge-offs     (50)   (310)
Recoveries 169   169    
Ending Balance 2,628   2,628   1,813
Land And Construction          
Financing Receivable Allowance For Credit Losses [Line Items]          
Beginning Balance 272   103 67 67
Provision for loan losses (70)   99   36
Ending Balance 202   202   103
Commercial and Industrial Loans          
Financing Receivable Allowance For Credit Losses [Line Items]          
Beginning Balance 4,139   1,649 1,897 1,897
Provision for loan losses 31   2,521   1,665
Charge-offs         (1,913)
Ending Balance 4,170   4,170   1,649
Consumer Loans          
Financing Receivable Allowance For Credit Losses [Line Items]          
Beginning Balance 549   236 $ 141 141
Provision for loan losses (253)   60   95
Ending Balance $ 296   $ 296   $ 236