Fair Value of Assets and Liabilities - Schedule Of Estimated Fair Values (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Duration of purchased receivables	1 year
Interest rate contracts	$ 2,027	$ 919
Purchased receivables, net	13,732	15,254
Mortgage servicing rights	1,199	1,010
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Commitments to extend credit	242,506	219,349
Standby letters of credit	8,122	6,004
Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Commitments to extend credit	2,425	2,193
Standby letters of credit	81	60
Level 1 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing rights	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	144,566	72,056
Investment securities	36,958	45,570
Level 1 inputs: | Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash, due from banks and deposits in other banks	144,566	72,056
Investment securities	36,958	45,570
Level 2 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing rights	0	0
Level 2 inputs: | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	198,219	238,361
Investment in Federal Home Loan Bank stock	1,816	3,404
Accrued interest receivable	3,476	3,373
Deposits	1,264,919	1,179,747
Securities sold under repurchase agreements	33,413	19,843
Borrowings	12,458	26,304
Accrued interest payable	52	18
Level 2 inputs: | Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	198,287	238,468
Investment in Federal Home Loan Bank stock	1,816	3,404
Accrued interest receivable	3,476	3,373
Deposits	1,264,995	1,180,136
Securities sold under repurchase agreements	33,413	19,843
Borrowings	12,491	26,485
Accrued interest payable	52	18
Level 3 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing rights	1,199	1,010
Level 3 inputs: | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and loans held for sale	1,040,277	968,370
Purchased receivables, net	13,732	15,254
Mortgage servicing rights	1,199	1,010
RML earn-out liability	10,262	7,324
Junior subordinated debentures	18,558	18,558
Level 3 inputs: | Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and loans held for sale	1,038,911	974,366
Purchased receivables, net	13,732	15,254
Mortgage servicing rights	1,199	1,010
RML earn-out liability	10,262	7,324
Junior subordinated debentures	17,254	17,239
Interest Rate Contract
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	240	78
Interest Rate Contract | Level 1 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	0	0
Interest Rate Contract | Level 2 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	240	78
Interest Rate Contract | Level 2 inputs: | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	240	78
Interest rate contracts	535	158
Interest Rate Contract | Level 2 inputs: | Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	240	78
Interest rate contracts	535	158
Interest Rate Contract | Level 3 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	0	0
Interest Rate Lock Commitments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	1,787	841
Interest rate contracts	535	158
Interest Rate Lock Commitments | Level 1 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	0	0
Interest rate contracts	0	0
Interest Rate Lock Commitments | Level 2 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	0	0
Interest rate contracts	535	158
Interest Rate Lock Commitments | Level 3 inputs:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	1,787	841
Interest rate contracts	0	0
Interest Rate Lock Commitments | Level 3 inputs: | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	1,787	841
Interest Rate Lock Commitments | Level 3 inputs: | Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts	$ 1,787	$ 841