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Loans - Summary of Portfolio Loans Individually Evaluated for Impairment by Category (Details) - Portfolio loans, net - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]    
Unpaid Contractual Principal Balance $ 19,320 $ 15,057
Recorded Investment With No Allowance 6,283 3,241
Recorded Investment With Allowance 7,544 12,150
Total Recorded Investment 13,827 15,391
Impaired Financing Receivable, Related Allowance 1,755 3,064
Average Recorded Investment 18,644 7,366
Commercial and industrial    
Financing Receivable, Impaired [Line Items]    
Unpaid Contractual Principal Balance 15,548 12,341
Recorded Investment With No Allowance 3,751 566
Recorded Investment With Allowance 6,534 11,791
Total Recorded Investment 10,285 12,357
Impaired Financing Receivable, Related Allowance 1,572 2,909
Average Recorded Investment 15,283 4,489
Commercial - owner occupied    
Financing Receivable, Impaired [Line Items]    
Unpaid Contractual Principal Balance 0 225
Recorded Investment With No Allowance 0 231
Recorded Investment With Allowance 0 0
Total Recorded Investment 0 231
Impaired Financing Receivable, Related Allowance 0 0
Average Recorded Investment 0 227
Commercial - investor owned    
Financing Receivable, Impaired [Line Items]    
Unpaid Contractual Principal Balance 288 525
Recorded Investment With No Allowance 288 435
Recorded Investment With Allowance 0 0
Total Recorded Investment 288 435
Impaired Financing Receivable, Related Allowance 0 0
Average Recorded Investment 288 668
Construction and land development    
Financing Receivable, Impaired [Line Items]    
Unpaid Contractual Principal Balance 1,935 1,904
Recorded Investment With No Allowance 1,603 1,947
Recorded Investment With Allowance 332 359
Total Recorded Investment 1,935 2,306
Impaired Financing Receivable, Related Allowance 131 155
Average Recorded Investment 1,550 1,918
Residential real estate    
Financing Receivable, Impaired [Line Items]    
Unpaid Contractual Principal Balance 1,540 62
Recorded Investment With No Allowance 632 62
Recorded Investment With Allowance 678 0
Total Recorded Investment 1,310 62
Impaired Financing Receivable, Related Allowance 52 0
Average Recorded Investment 1,514 64
Consumer and other    
Financing Receivable, Impaired [Line Items]    
Unpaid Contractual Principal Balance 9 0
Recorded Investment With No Allowance 9 0
Recorded Investment With Allowance 0 0
Total Recorded Investment 9 0
Impaired Financing Receivable, Related Allowance 0 0
Average Recorded Investment $ 9 $ 0