Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Allowance for loan losses:
Beginning Balance	$ 17,461	$ 16,158
Charge-offs	(25)	691
Recoveries	1,424	274
Provision (release)	(722)
Ending Balance	18,188	15,741
Ending balance: Individually evaluated for impairment	588	803
Ending balance: Collectively evaluated for impairment	17,600	14,938
Loans:
Ending balance	1,601,812	1,488,021	$ 1,617,622
Ending balance: Individually evaluated for impairment	17,230	17,774
Ending balance: Collectively evaluated for impairment	1,584,582	1,470,247
Commercial
Allowance for loan losses:
Beginning Balance	2,453	1,629
Charge-offs	16	1
Recoveries	17	2
Provision (release)	150	42
Ending Balance	2,604	1,672
Ending balance: Collectively evaluated for impairment	2,604	1,672
Loans:
Ending balance	281,134	233,922	272,851
Ending balance: Individually evaluated for impairment		24
Ending balance: Collectively evaluated for impairment	281,134	233,898
Lease financing receivables
Allowance for loan losses:
Beginning Balance	692	633
Charge-offs	5	117
Provision (release)	(70)	87
Ending Balance	617	603
Ending balance: Collectively evaluated for impairment	617	603
Loans:
Ending balance	66,344	64,607	68,325
Ending balance: Individually evaluated for impairment		484
Ending balance: Collectively evaluated for impairment	66,344	64,123
Real estate - commercial
Allowance for loan losses:
Beginning Balance	9,522	9,547
Charge-offs	(96)	274
Recoveries	367	35
Provision (release)	(420)	(1,477)
Ending Balance	9,565	7,831
Ending balance: Individually evaluated for impairment	503
Ending balance: Collectively evaluated for impairment	9,062	7,831
Loans:
Ending balance	713,422	713,358
Ending balance: Individually evaluated for impairment	4,740	3,341
Ending balance: Collectively evaluated for impairment	708,682	710,017
Real estate - residential
Allowance for loan losses:
Beginning Balance	3,207	2,692
Charge-offs	(33)	195
Recoveries	958	142
Provision (release)	(850)	417
Ending Balance	3,348	3,056
Ending balance: Individually evaluated for impairment	85	803
Ending balance: Collectively evaluated for impairment	3,263	2,253
Loans:
Ending balance	438,610	373,477
Ending balance: Individually evaluated for impairment	12,276	13,441
Ending balance: Collectively evaluated for impairment	426,334	360,036
Consumer
Allowance for loan losses:
Beginning Balance	122	833
Charge-offs	91	100
Recoveries	74	75
Provision (release)	(39)	(44)
Ending Balance	66	764
Ending balance: Collectively evaluated for impairment	66	764
Loans:
Ending balance	2,120	2,913	2,774
Ending balance: Individually evaluated for impairment	17	210
Ending balance: Collectively evaluated for impairment	2,103	2,703
All other
Allowance for loan losses:
Beginning Balance	542	435
Charge-offs	8
Recoveries	5	2
Provision (release)	306	400
Ending Balance	845	837
Ending balance: Collectively evaluated for impairment	845	837
Loans:
Ending balance	8,703	12,695	$ 11,289
Ending balance: Collectively evaluated for impairment	8,703	12,695
Construction Loans \| Real estate - commercial
Allowance for loan losses:
Beginning Balance	923	389
Charge-offs	(16)	4
Recoveries	3	18
Provision (release)	201	575
Ending Balance	1,143	978
Ending balance: Collectively evaluated for impairment	1,143	978
Loans:
Ending balance	91,479	87,049
Ending balance: Individually evaluated for impairment	197	274
Ending balance: Collectively evaluated for impairment	$ 91,282	$ 86,775

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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Amount of expense related to estimated loss from loan and lease transactions.

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