Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allowance for loan losses:
Beginning Balance	$ 16,158	$ 16,223	$ 21,637
Charge-offs	2,306	3,190	4,770
Recoveries	1,809	2,375	3,756
Provision (release)	1,800	750	(4,400)
Ending Balance	17,461	16,158	16,223
Ending balance: Individually evaluated for impairment	144	1,049	34
Ending balance: Collectively evaluated for impairment	17,317	15,109	16,189
Loans:
Ending balance	1,617,622	1,478,809	1,133,715
Ending balance: Individually evaluated for impairment	20,112	22,287	20,886
Ending balance: Collectively evaluated for impairment	1,597,510	1,456,522	1,112,829
Commercial
Allowance for loan losses:
Beginning Balance		2,096	1,644
Charge-offs			993
Recoveries			451
Provision (release)			994
Ending Balance			2,096
Ending balance: Individually evaluated for impairment			3
Ending balance: Collectively evaluated for impairment			2,093
Loans:
Ending balance	272,851	228,113	141,315
Ending balance: Individually evaluated for impairment			73
Ending balance: Collectively evaluated for impairment			141,242
Commercial without Leases
Allowance for loan losses:
Beginning Balance	1,629	1,463
Charge-offs	25	95
Recoveries	30	32
Provision (release)	819	229
Ending Balance	2,453	1,629	1,463
Ending balance: Collectively evaluated for impairment	2,453	1,629
Loans:
Ending balance	272,851	228,113
Ending balance: Individually evaluated for impairment		240
Ending balance: Collectively evaluated for impairment	272,851	227,873
Commercial leases
Allowance for loan losses:
Beginning Balance	633	633
Charge-offs	215	23
Recoveries		5
Provision (release)	274	18
Ending Balance	692	633	633
Ending balance: Collectively evaluated for impairment	692	633
Loans:
Ending balance	68,325
Ending balance: Individually evaluated for impairment	178	366
Ending balance: Collectively evaluated for impairment	68,147	55,085
Lease financing receivables
Loans:
Ending balance	68,325	55,451
Real estate - commercial
Allowance for loan losses:
Beginning Balance	9,547	9,013	12,577
Charge-offs	309	1,633	1,653
Recoveries	161	640	1,595
Provision (release)	123	1,527	(3,506)
Ending Balance	9,522	9,547	9,013
Ending balance: Individually evaluated for impairment		246
Ending balance: Collectively evaluated for impairment	9,522	9,301	9,013
Loans:
Ending balance	750,991	736,247	605,721
Ending balance: Individually evaluated for impairment	3,041	6,448	5,396
Ending balance: Collectively evaluated for impairment	747,950	729,799	600,325
Real estate - residential
Allowance for loan losses:
Beginning Balance	2,692	1,694	1,981
Charge-offs	1,347	1,072	1,639
Recoveries	980	1,331	1,075
Provision (release)	(520)	739	277
Ending Balance	1,805	2,692	1,694
Ending balance: Individually evaluated for impairment	53	803	31
Ending balance: Collectively evaluated for impairment	1,752	1,889	1,663
Loans:
Ending balance	426,230	377,851	351,007
Ending balance: Individually evaluated for impairment	14,575	14,952	15,334
Ending balance: Collectively evaluated for impairment	411,655	362,899	335,673
Consumer
Allowance for loan losses:
Beginning Balance	833	1,190	1,454
Charge-offs	386	344	483
Recoveries	243	253	359
Provision (release)	834	(266)	(140)
Ending Balance	1,524	833	1,190
Ending balance: Individually evaluated for impairment	91
Ending balance: Collectively evaluated for impairment	1,433	833	1,190
Loans:
Ending balance	2,774	3,237	4,216
Ending balance: Individually evaluated for impairment	2,117
Ending balance: Collectively evaluated for impairment	657	3,237	4,216
All other
Allowance for loan losses:
Beginning Balance	435	1,965	2,506
Charge-offs	1
Recoveries	18	18
Provision (release)	90	(1,548)	(541)
Ending Balance	542	435	1,965
Ending balance: Collectively evaluated for impairment	542	435	1,965
Loans:
Ending balance	11,289	13,190	11,650
Ending balance: Collectively evaluated for impairment	11,289	13,190	11,650
Construction Loans
Allowance for loan losses:
Beginning Balance	389	265	1,475
Charge-offs	23	23	2
Recoveries	377	96	276
Provision (release)	180	51	(1,484)
Ending Balance	923	389	265
Ending balance: Collectively evaluated for impairment	923	389	265
Loans:
Ending balance	85,162	64,720	19,806
Ending balance: Individually evaluated for impairment	201	281	83
Ending balance: Collectively evaluated for impairment	$ 84,961	$ 64,439	$ 19,723

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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