Schedule of Loans by Loan Classification [Line Items]

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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 deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes 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 after allowance and 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 and loans held for sale.

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Loans - Balance by Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Schedule of Loans by Loan Classification [Line Items]
Gross loans	$ 2,687,228	$ 2,568,562
Deferred loan origination fees, net	(3,301)	(3,103)
Total loans	2,683,927	2,565,459
Allowance for loan losses	(39,764)	(33,614)	$ (33,729)	$ (33,849)
Net Loans	2,644,163	2,531,845
Commercial
Schedule of Loans by Loan Classification [Line Items]
Gross loans	2,325,623	2,212,883
Commercial real estate
Schedule of Loans by Loan Classification [Line Items]
Gross loans	1,442,150	1,394,179
Allowance for loan losses	(20,861)	(18,338)	(17,826)	(18,014)
Commercial and industrial
Schedule of Loans by Loan Classification [Line Items]
Gross loans	537,790	501,227
Allowance for loan losses	(10,235)	(9,129)	(10,403)	(10,493)
Commercial construction
Schedule of Loans by Loan Classification [Line Items]
Gross loans	345,683	317,477
Allowance for loan losses	(6,161)	(4,149)	(3,452)	(3,307)
Retail
Schedule of Loans by Loan Classification [Line Items]
Gross loans	361,605	355,679
Residential mortgages
Schedule of Loans by Loan Classification [Line Items]
Gross loans	254,188	247,373
Allowance for loan losses	(1,598)	(1,195)	(1,184)	(1,160)
Home equity
Schedule of Loans by Loan Classification [Line Items]
Gross loans	97,223	98,252
Allowance for loan losses	(636)	(536)	(627)	(629)
Consumer
Schedule of Loans by Loan Classification [Line Items]
Gross loans	10,194	10,054
Allowance for loan losses	$ (273)	$ (267)	$ (237)	$ (246)