Allowance for Loan Losses - Summary of Allowance for Loan Losses and Recorded Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	$ 2,200	$ 1,763
Allowance for Loan Losses, Collectively Evaluated for Impairment	60,024	59,233
Total Allowance for Loan Losses	62,224	60,996	$ 56,390
Portfolio Loans, Individually Evaluated for Impairment	75,337	49,506
Portfolio Loans, Collectively Evaluated for Impairment	7,061,815	5,897,142
Total Portfolio Loans	7,137,152	5,946,648
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	2,023	1,295
Allowance for Loan Losses, Collectively Evaluated for Impairment	28,554	32,412
Total Allowance for Loan Losses	30,577	33,707	27,235
Portfolio Loans, Individually Evaluated for Impairment	47,920	11,369
Portfolio Loans, Collectively Evaluated for Impairment	3,368,598	2,910,463
Total Portfolio Loans	3,416,518	2,921,832
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	55	360
Allowance for Loan Losses, Collectively Evaluated for Impairment	15,626	11,236
Total Allowance for Loan Losses	15,681	11,596	8,966
Portfolio Loans, Individually Evaluated for Impairment	17,606	13,672
Portfolio Loans, Collectively Evaluated for Impairment	1,703,227	1,479,744
Total Portfolio Loans	1,720,833	1,493,416
Commercial construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	113	87
Allowance for Loan Losses, Collectively Evaluated for Impairment	7,787	7,896
Total Allowance for Loan Losses	7,900	7,983	13,167
Portfolio Loans, Individually Evaluated for Impairment	1,914	15,775
Portfolio Loans, Collectively Evaluated for Impairment	373,531	241,422
Total Portfolio Loans	375,445	257,197
Consumer real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	10
Allowance for Loan Losses, Collectively Evaluated for Impairment	6,337	6,177
Total Allowance for Loan Losses	6,337	6,187	5,479
Portfolio Loans, Individually Evaluated for Impairment	7,884	8,674
Portfolio Loans, Collectively Evaluated for Impairment	1,537,439	1,197,983
Total Portfolio Loans	1,545,323	1,206,657
Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	9	11
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,720	1,512
Total Allowance for Loan Losses	1,729	1,523	$ 1,543
Portfolio Loans, Individually Evaluated for Impairment	13	16
Portfolio Loans, Collectively Evaluated for Impairment	79,020	67,530
Total Portfolio Loans	$ 79,033	$ 67,546

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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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 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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