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Loans - Schedule of Loan Portfolio Summarized by the Past Due Status (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	$ 430	$ 855
Financing Receivable, before Allowance for Credit Loss	1,486,886	1,637,784	$ 1,700,883
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	8,003	11,000
30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,720	4,612
60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	2,700	3,801
Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	3,583	2,587
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,478,883	1,626,784
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	194,845	320,154	345,011
Commercial and industrial | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,771	1,785
Commercial and industrial | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	211	1,554
Commercial and industrial | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	921	231
Commercial and industrial | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	639	0
Commercial and industrial | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	193,074	318,369
Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	785,207	744,627	754,074
Commercial real estate | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	4,346	4,766
Commercial real estate | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	464	452
Commercial real estate | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,368	2,683
Commercial real estate | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	2,514	1,631
Commercial real estate | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	780,861	739,861
Commercial real estate construction
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	97
Financing Receivable, before Allowance for Credit Loss	43,807	53,902	50,367
Commercial real estate construction | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	215
Commercial real estate construction | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	42
Commercial real estate construction | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	76
Commercial real estate construction | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	97
Commercial real estate construction | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	43,807	53,687
Residential mortgage
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	371	668
Financing Receivable, before Allowance for Credit Loss	356,882	401,340	428,480
Residential mortgage | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	807	3,669
Residential mortgage | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	29	2,216
Residential mortgage | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	407	684
Residential mortgage | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	371	769
Residential mortgage | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	356,075	397,671
Home equity lines of credit
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	59	90
Financing Receivable, before Allowance for Credit Loss	94,604	104,610	109,293
Home equity lines of credit | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	991	400
Home equity lines of credit | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	932	250
Home equity lines of credit | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	60
Home equity lines of credit | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	59	90
Home equity lines of credit | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	93,613	104,210
Consumer
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	11,541	13,151	$ 13,658
Consumer | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	88	165
Consumer | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	84	98
Consumer | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	4	67
Consumer | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Consumer | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	11,453	12,986
Originated Loans
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	430	580
Financing Receivable, before Allowance for Credit Loss	1,143,034	1,228,096
Originated Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	7,107	8,396
Originated Loans | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	995	3,099
Originated Loans | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	2,529	2,985
Originated Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	3,583	2,312
Originated Loans | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,135,927	1,219,700
Originated Loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	162,060	277,903
Originated Loans | Commercial and industrial | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,771	1,432
Originated Loans | Commercial and industrial | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	211	1,432
Originated Loans | Commercial and industrial | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	921	0
Originated Loans | Commercial and industrial | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	639	0
Originated Loans | Commercial and industrial | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	160,289	276,471
Originated Loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	550,241	479,123
Originated Loans | Commercial real estate | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	3,996	4,227
Originated Loans | Commercial real estate | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	114	133
Originated Loans | Commercial real estate | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,368	2,463
Originated Loans | Commercial real estate | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	2,514	1,631
Originated Loans | Commercial real estate | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	546,245	474,896
Originated Loans | Commercial real estate construction
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	34,929	41,208
Originated Loans | Commercial real estate construction | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	76
Originated Loans | Commercial real estate construction | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Originated Loans | Commercial real estate construction | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	76
Originated Loans | Commercial real estate construction | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Originated Loans | Commercial real estate construction | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	34,929	41,132
Originated Loans | Residential mortgage
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	371	522
Financing Receivable, before Allowance for Credit Loss	308,715	337,137
Originated Loans | Residential mortgage | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	636	2,340
Originated Loans | Residential mortgage | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	28	1,382
Originated Loans | Residential mortgage | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	237	335
Originated Loans | Residential mortgage | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	371	623
Originated Loans | Residential mortgage | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	308,079	334,797
Originated Loans | Home equity lines of credit
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	59	58
Financing Receivable, before Allowance for Credit Loss	76,587	80,906
Originated Loans | Home equity lines of credit | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	619	172
Originated Loans | Home equity lines of credit | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	560	54
Originated Loans | Home equity lines of credit | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	60
Originated Loans | Home equity lines of credit | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	59	58
Originated Loans | Home equity lines of credit | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	75,968	80,734
Originated Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	10,502	11,819
Originated Loans | Consumer | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	85	149
Originated Loans | Consumer | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	82	98
Originated Loans | Consumer | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	3	51
Originated Loans | Consumer | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Originated Loans | Consumer | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	10,417	11,670
Acquired Loans
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	275
Financing Receivable, before Allowance for Credit Loss	343,852	409,688
Acquired Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	896	2,604
Acquired Loans | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	725	1,513
Acquired Loans | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	171	816
Acquired Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	275
Acquired Loans | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	342,956	407,084
Acquired Loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	32,785	42,251
Acquired Loans | Commercial and industrial | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	353
Acquired Loans | Commercial and industrial | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	122
Acquired Loans | Commercial and industrial | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	231
Acquired Loans | Commercial and industrial | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Acquired Loans | Commercial and industrial | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	32,785	41,898
Acquired Loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	234,966	265,504
Acquired Loans | Commercial real estate | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	350	539
Acquired Loans | Commercial real estate | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	350	319
Acquired Loans | Commercial real estate | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	220
Acquired Loans | Commercial real estate | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Acquired Loans | Commercial real estate | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	234,616	264,965
Acquired Loans | Commercial real estate construction
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	97
Financing Receivable, before Allowance for Credit Loss	8,878	12,694
Acquired Loans | Commercial real estate construction | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	139
Acquired Loans | Commercial real estate construction | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	42
Acquired Loans | Commercial real estate construction | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Acquired Loans | Commercial real estate construction | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	97
Acquired Loans | Commercial real estate construction | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	8,878	12,555
Acquired Loans | Residential mortgage
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	146
Financing Receivable, before Allowance for Credit Loss	48,167	64,203
Acquired Loans | Residential mortgage | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	171	1,329
Acquired Loans | Residential mortgage | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1	834
Acquired Loans | Residential mortgage | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	170	349
Acquired Loans | Residential mortgage | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	146
Acquired Loans | Residential mortgage | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	47,996	62,874
Acquired Loans | Home equity lines of credit
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	32
Financing Receivable, before Allowance for Credit Loss	18,017	23,704
Acquired Loans | Home equity lines of credit | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	372	228
Acquired Loans | Home equity lines of credit | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	372	196
Acquired Loans | Home equity lines of credit | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Acquired Loans | Home equity lines of credit | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	32
Acquired Loans | Home equity lines of credit | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	17,645	23,476
Acquired Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans Receivable greater than 90 Days and Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	1,039	1,332
Acquired Loans | Consumer | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	3	16
Acquired Loans | Consumer | 30–59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	2	0
Acquired Loans | Consumer | 60–89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1	16
Acquired Loans | Consumer | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Acquired Loans | Consumer | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 1,036	$ 1,316

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