Allowance for Loan and Lease Losses - Schedule of Detail in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			$ 43,410
Provision (credit)	$ 601	$ 1,045	1,046	$ 1,612
Ending Balance	40,790		40,790
Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	40,245	40,107	43,321	39,686
Charge-offs	(356)	(834)	(4,277)	(1,314)
Recoveries	210	803	575	1,096
Provision (credit)	590	1,035	1,070	1,643
Ending Balance	40,689	41,111	40,689	41,111
Total Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	83	104	89	85
Charge-offs	(29)	(103)	(29)	(104)
Recoveries	36	103	65	164
Provision (credit)	11	10	(24)	(31)
Ending Balance	101	114	101	114
Commercial and industrial \| Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,523	12,431	11,217	11,812
Charge-offs	(100)	(103)	(480)	(106)
Recoveries	6	2	49	8
Provision (credit)	114	536	757	1,152
Ending Balance	11,543	12,866	11,543	12,866
Commercial and industrial \| Total Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	25	55	25
Charge-offs	(3)	0	(3)	(1)
Recoveries	17	36	33	56
Provision (credit)	(14)	(42)	(85)	(61)
Ending Balance	0	19	0	19
Commercial real estate \| Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	21,045	20,402	23,483	20,412
Charge-offs	(55)	(60)	(3,398)	(60)
Recoveries	94	176	95	346
Provision (credit)	(130)	252	774	72
Ending Balance	20,954	20,770	20,954	20,770
Commercial real estate \| Total Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	25	0	0	0
Charge-offs	0	0	0	0
Recoveries	4	15	10	23
Provision (credit)	22	10	41	2
Ending Balance	51	25	51	25
Residential real estate \| Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,404	5,972	7,317	6,161
Charge-offs	(3)	(21)	(21)	(206)
Recoveries	56	94	282	136
Provision (credit)	396	102	(725)	56
Ending Balance	6,853	6,147	6,853	6,147
Residential real estate \| Total Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	58	73	28	54
Charge-offs	(23)	(103)	(23)	(103)
Recoveries	15	50	22	83
Provision (credit)	(6)	45	17	31
Ending Balance	44	65	44	65
Consumer and other \| Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,273	1,302	1,304	1,301
Charge-offs	(198)	(650)	(378)	(942)
Recoveries	54	531	149	606
Provision (credit)	210	145	264	363
Ending Balance	1,339	1,328	1,339	1,328
Consumer and other \| Total Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	6	6	6
Charge-offs	(3)	0	(3)	0
Recoveries	0	2	0	2
Provision (credit)	9	(3)	3	(3)
Ending Balance	6	5	6	5
Finance Leases \| Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (credit)	0	0		0
Ending Balance	0	0	0	0
Finance Leases \| Total Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0
Charge-offs	0
Recoveries	0
Provision (credit)	0
Ending Balance	0		0
Covered loans \| Total Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		0	0	0
Charge-offs		0	0	0
Recoveries		0	0	0
Provision (credit)		0	0	0
Ending Balance	$ 0	$ 0	$ 0	$ 0

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

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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-Publisher FASB
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- Definition

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.

+ References

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- Definition

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

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