Allowance for Loan Losses - Balance in Allowance for Loan Losses and Recorded Investment in Loans by Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable Impaired [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment		$ 30
Allowance for Loan Losses, Collectively Evaluated for Impairment	$ 15,400	10,570
Total Allowance for Loan Losses	15,400	10,600
Unaccreted Credit Component Other Loans	432	732
Loans, Individually Evaluated for Impairment	8,994	12,038
Loans, Collectively Evaluated for Impairment	2,539,649	1,746,772
Total loans	2,552,016	1,765,469
Unaccreted Credit Component Other Loans	59,037	85,293
Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired	3,373	6,659
Residential Properties
Financing Receivable Impaired [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	6,669	6,799
Total Allowance for Loan Losses	6,669	6,799
Unaccreted Credit Component Other Loans	128	127
Loans, Individually Evaluated for Impairment	6,093
Loans, Collectively Evaluated for Impairment	1,774,796	1,160,568
Total loans	1,780,889	1,160,568
Unaccreted Credit Component Other Loans	12,373	7,747
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment		30
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,983	1,783
Total Allowance for Loan Losses	2,983	1,813
Unaccreted Credit Component Other Loans	136	363
Loans, Individually Evaluated for Impairment	2,148	6,275
Loans, Collectively Evaluated for Impairment	474,634	352,162
Total loans	476,959	358,791
Unaccreted Credit Component Other Loans	24,796	43,287
Commercial Real Estate | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired	177	354
Commercial and Industrial Loans
Financing Receivable Impaired [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	5,227	1,649
Total Allowance for Loan Losses	5,227	1,649
Unaccreted Credit Component Other Loans	147	187
Loans, Individually Evaluated for Impairment	753	5,687
Loans, Collectively Evaluated for Impairment	233,992	185,732
Total loans	237,941	196,584
Unaccreted Credit Component Other Loans	20,165	28,231
Commercial and Industrial Loans | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired	3,196	5,165
Consumer Loans
Financing Receivable Impaired [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	288	236
Total Allowance for Loan Losses	288	236
Unaccreted Credit Component Other Loans	19	13
Loans, Individually Evaluated for Impairment		76
Loans, Collectively Evaluated for Impairment	32,127	37,130
Total loans	32,127	37,206
Unaccreted Credit Component Other Loans	1,266	1,761
Land
Financing Receivable Impaired [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	233	103
Total Allowance for Loan Losses	233	103
Unaccreted Credit Component Other Loans	2	42
Loans, Collectively Evaluated for Impairment	24,100	11,180
Total loans	24,100	12,320
Unaccreted Credit Component Other Loans	$ 437	4,267
Land | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired		$ 1,140