Fair Value of Assets and Liabilities - Schedule Of Estimated Fair Values (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Duration of purchased receivables	1 year
Derivative contracts	$ 2,060	$ 1,639
Purchased receivables, net	15,500	13,326
Mortgage servicing rights	3,196	1,654
Total other liabilities	430	216
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Commitments to extend credit	222,438	222,387
Standby letters of credit	9,135	6,399
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Commitments to extend credit	2,224	2,224
Standby letters of credit	91	64
Level 1 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing rights	0	0
Total other liabilities	0	0
Level 1 inputs | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash, due from banks and deposits in other banks	45,866	58,673
Investment securities	52,641	43,033
Level 1 inputs | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash, due from banks and deposits in other banks	45,866	58,673
Investment securities	52,641	43,033
Level 2 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing rights	0	0
Total other liabilities	430	216
Level 2 inputs | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	248,616	248,983
Investment in Federal Home Loan Bank stock	1,965	1,816
Accrued interest receivable	3,674	3,620
Deposits	1,278,366	1,240,792
Securities sold under repurchase agreements	27,701	31,420
Borrowings	4,350	2,120
Accrued interest payable	163	56
Level 2 inputs | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	248,648	249,039
Investment in Federal Home Loan Bank stock	1,965	1,816
Accrued interest receivable	3,674	3,620
Deposits	1,278,081	1,240,223
Securities sold under repurchase agreements	27,701	31,420
Borrowings	4,461	2,101
Accrued interest payable	163	56
Level 3 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing rights	3,196	1,654
Total other liabilities	0	0
Level 3 inputs | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and loans held for sale	1,073,528	1,031,340
Purchased receivables, net	15,500	13,326
Mortgage servicing rights	3,196	1,654
Accrued liability, RML acquisition payments	3,274	6,624
Junior subordinated debentures	18,558	18,558
Level 3 inputs | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and loans held for sale	1,072,547	1,033,551
Purchased receivables, net	15,500	13,326
Mortgage servicing rights	3,196	1,654
Accrued liability, RML acquisition payments	7,949	6,624
Junior subordinated debentures	20,418	17,433
Commercial interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	296	125
Total other liabilities	296	125
Commercial interest rate swaps | Level 1 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	0	0
Total other liabilities	0	0
Commercial interest rate swaps | Level 2 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	296	125
Total other liabilities	296	125
Commercial interest rate swaps | Level 2 inputs | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	296	125
Total other liabilities	296	216
Commercial interest rate swaps | Level 2 inputs | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	296	125
Total other liabilities	296	216
Commercial interest rate swaps | Level 3 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	0	0
Total other liabilities	0	0
Interest rate lock commitments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	1,764	1,514
Interest rate lock commitments | Level 1 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	0	0
Interest rate lock commitments | Level 2 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	0	0
Interest rate lock commitments | Level 3 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	1,764	1,514
Interest rate lock commitments | Level 3 inputs | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	1,764	1,514
Interest rate lock commitments | Level 3 inputs | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative contracts	1,764	1,514
Retail interest rate contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total other liabilities	134	91
Retail interest rate contracts | Level 1 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total other liabilities	0	0
Retail interest rate contracts | Level 2 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total other liabilities	134	91
Retail interest rate contracts | Level 2 inputs | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total other liabilities	134	91
Retail interest rate contracts | Level 2 inputs | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total other liabilities	134	91
Retail interest rate contracts | Level 3 inputs
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total other liabilities	$ 0	$ 0