Loans (Details 3) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Allowance for loan losses
Beginning balance	$ 16,960	$ 14,222	$ 14,487	$ 13,592
Provision for loan losses	2,600	550	6,100	1,850
Loans charged off	(393)	(674)	(1,666)	(1,828)
Recoveries	174	163	420	647
Ending balance	19,341	14,261	19,341	14,261
Commercial real estate
Allowance for loan losses
Beginning balance	7,816	5,571	5,843	5,036
Provision for loan losses	981	19	3,047	552
Loans charged off	(20)	(17)	(117)	(17)
Recoveries	2	1	6	3
Ending balance	8,779	5,574	8,779	5,574
Commercial
Allowance for loan losses
Beginning balance	3,232	2,199	2,323	2,093
Provision for loan losses	1,043	75	2,192	228
Loans charged off	(92)	(32)	(340)	(90)
Recoveries	1	1	9	12
Ending balance	4,184	2,243	4,184	2,243
Residential real estate
Allowance for loan losses
Beginning balance	2,922	2,910	2,875	2,837
Provision for loan losses	398	147	559	330
Loans charged off	(22)	(224)	(163)	(371)
Recoveries	14	11	41	48
Ending balance	3,312	2,844	3,312	2,844
Consumer
Allowance for loan losses
Beginning balance	2,640	2,755	2,710	2,963
Provision for loan losses	41	236	551	543
Loans charged off	(259)	(401)	(1,046)	(1,350)
Recoveries	157	150	364	584
Ending balance	2,579	2,740	2,579	2,740
Unallocated
Allowance for loan losses
Beginning balance	350	787	736	663
Provision for loan losses	137	73	(249)	197
Loans charged off	0	0	0	0
Recoveries	0	0	0	0
Ending balance	$ 487	$ 860	$ 487	$ 860

Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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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 of credit loss expense (reversal of expense) for financing receivable.

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