Loans Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses, Beginning Balance	$ 21,187	$ 20,196
Charge-offs	(481)	(462)
Recoveries	159	167
Provision	2,772	472
Allowance for Loan Losses, Ending Balance	23,637	20,373
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	41	0	$ 47
Allowance for loan losses - Loans Collectively Evaluated for Impairment	23,596	20,373	21,140
Ending Loan Balance - Individually Evaluated for Impairment	2,235	2,945	1,101
Ending Loan Balance - Collectively Evaluated for Impairment	2,411,958	2,232,263	2,385,019
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses, Beginning Balance	1,386	1,218
Charge-offs	(14)	(1)
Recoveries	0	0
Provision	267	33
Allowance for Loan Losses, Ending Balance	1,639	1,250
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	4	0	5
Allowance for loan losses - Loans Collectively Evaluated for Impairment	1,635	1,250	1,381
Ending Loan Balance - Individually Evaluated for Impairment	34	40	35
Ending Loan Balance - Collectively Evaluated for Impairment	147,066	133,236	150,625
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses, Beginning Balance	5,830	5,644
Charge-offs	0	(29)
Recoveries	0	0
Provision	1,235	(26)
Allowance for Loan Losses, Ending Balance	7,065	5,589
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	0	0	0
Allowance for loan losses - Loans Collectively Evaluated for Impairment	7,065	5,589	5,830
Ending Loan Balance - Individually Evaluated for Impairment	1,137	387	0
Ending Loan Balance - Collectively Evaluated for Impairment	524,993	493,000	510,541
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses, Beginning Balance	9,408	8,882
Charge-offs	(467)	(418)
Recoveries	159	167
Provision	904	778
Allowance for Loan Losses, Ending Balance	10,004	9,409
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	0	0	0
Allowance for loan losses - Loans Collectively Evaluated for Impairment	10,004	9,409	9,408
Ending Loan Balance - Individually Evaluated for Impairment	111	101	107
Ending Loan Balance - Collectively Evaluated for Impairment	824,598	746,698	811,091
Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Loan Losses, Beginning Balance	4,563	4,452
Charge-offs	0	(14)
Recoveries	0	0
Provision	366	(313)
Allowance for Loan Losses, Ending Balance	4,929	4,125
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	37	0	42
Allowance for loan losses - Loans Collectively Evaluated for Impairment	4,892	4,125	4,521
Ending Loan Balance - Individually Evaluated for Impairment	953	2,417	959
Ending Loan Balance - Collectively Evaluated for Impairment	$ 915,301	$ 859,329	$ 912,762

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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