Loans - Summary of Term Loans by Origination Year (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2021	$ 769,639
2020	684,850	$ 1,453,800
2019	406,475	479,317
2018	195,151	274,958
2017	124,437	144,305
2016		49,160
Prior	89,961
Prior		59,505
Revolving Loans Converted to Term Loans	18,411	15,399
Revolving Loans	638,508	610,050
Total	2,927,432	3,086,494
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	731,143
2020	649,462	1,402,276
2019	384,160	454,729
2018	183,888	262,258
2017	117,020	132,832
2016		25,057
Prior	76,679
Prior		58,315
Revolving Loans Converted to Term Loans	8,765	14,118
Revolving Loans	564,593	527,170
Total	2,715,710	2,876,755
Commercial and industrial | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	31,131
2020	33,339	44,922
2019	13,864	15,369
2018	8,671	9,585
2017	4,163	7,509
2016		19,613
Prior	12,402
Prior		110
Revolving Loans Converted to Term Loans	7,628	0
Revolving Loans	58,428	60,448
Total	169,626	157,556
Commercial and industrial | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	7,365
2020	2,049	6,602
2019	8,451	9,219
2018	2,592	3,115
2017	3,254	3,964
2016		4,490
Prior	880
Prior		1,080
Revolving Loans Converted to Term Loans	2,018	1,281
Revolving Loans	15,487	22,432
Total	42,096	52,183
Commercial Real Estate-Investor Owned Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	259,086
2020	455,190	514,175
2019	341,541	363,843
2018	183,627	204,677
2017	111,808	137,548
2016		149,180
Prior	249,083
Prior		181,429
Revolving Loans Converted to Term Loans	3,690	6,509
Revolving Loans	38,687	32,058
Total	1,642,712	1,589,419
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	249,960
2020	421,836	481,867
2019	327,290	338,843
2018	169,832	189,305
2017	111,808	131,718
2016		138,288
Prior	227,018
Prior		161,439
Revolving Loans Converted to Term Loans	3,690	6,509
Revolving Loans	38,687	32,058
Total	1,550,121	1,480,027
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	9,126
2020	27,342	32,308
2019	13,822	19,722
2018	7,144	6,656
2017	0	0
2016		9,647
Prior	19,381
Prior		17,370
Revolving Loans Converted to Term Loans	0	0
Revolving Loans	0	0
Total	76,815	85,703
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	6,012	0
2019	429	5,278
2018	6,651	8,716
2017	0	5,830
2016		1,245
Prior	2,684
Prior		2,620
Revolving Loans Converted to Term Loans	0	0
Revolving Loans	0	0
Total	15,776	23,689
Commercial Real Estate-Owner Occupied Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	223,036
2020	407,750	435,219
2019	253,330	299,685
2018	202,642	224,116
2017	153,334	191,720
2016		110,117
Prior	246,866
Prior		186,776
Revolving Loans Converted to Term Loans	88	4,448
Revolving Loans	43,314	46,327
Total	1,530,360	1,498,408
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	213,157
2020	398,971	419,142
2019	240,316	287,001
2018	181,078	215,181
2017	142,757	179,382
2016		104,470
Prior	229,030
Prior		167,456
Revolving Loans Converted to Term Loans	0	2,672
Revolving Loans	41,902	45,323
Total	1,447,211	1,420,627
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	8,794
2020	7,884	13,657
2019	1,651	5,257
2018	15,452	3,113
2017	5,917	6,198
2016		4,338
Prior	9,605
Prior		8,460
Revolving Loans Converted to Term Loans	0	1,776
Revolving Loans	1,349	941
Total	50,652	43,740
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,085
2020	895	2,420
2019	11,363	7,427
2018	6,112	5,822
2017	4,660	6,140
2016		1,309
Prior	8,231
Prior		10,860
Revolving Loans Converted to Term Loans	88	0
Revolving Loans	63	63
Total	32,497	34,041
Construction Real Estate Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	202,259
2020	138,308	225,669
2019	116,620	158,570
2018	40,975	80,142
2017	18,999	30,212
2016		11,539
Prior	15,939
Prior		11,674
Revolving Loans Converted to Term Loans	195	0
Revolving Loans	21,074	28,880
Total	554,369	546,686
Construction Real Estate Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	174,256
2020	133,328	223,069
2019	116,620	156,360
2018	39,332	45,460
2017	7,784	18,579
2016		11,539
Prior	13,490
Prior		9,144
Revolving Loans Converted to Term Loans	195	0
Revolving Loans	20,974	28,880
Total	505,979	493,031
Construction Real Estate Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	28,003
2020	4,926	2,544
2019	0	86
2018	1,216	34,179
2017	11,215	11,632
2016		0
Prior	2,423
Prior		2,499
Revolving Loans Converted to Term Loans	0	0
Revolving Loans	0	0
Total	47,783	50,940
Construction Real Estate Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	54	56
2019	0	2,124
2018	427	503
2017	0	1
2016		0
Prior	26
Prior		31
Revolving Loans Converted to Term Loans	0	0
Revolving Loans	100	0
Total	607	2,715
Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
2021	39,137
2020	50,180	57,840
2019	22,651	29,480
2018	13,558	18,365
2017	11,190	17,152
2016		28,855
Prior	105,134
Prior		97,441
Revolving Loans Converted to Term Loans	171	1,459
Revolving Loans	62,569	67,666
Total	304,590	318,258
Residential Portfolio Segment | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	38,535
2020	49,198	57,059
2019	21,357	27,907
2018	13,139	17,718
2017	11,177	17,138
2016		27,443
Prior	99,035
Prior		92,657
Revolving Loans Converted to Term Loans	171	1,172
Revolving Loans	62,095	66,902
Total	294,707	307,996
Residential Portfolio Segment | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	33
2020	276	210
2019	719	840
2018	342	526
2017	0	0
2016		514
Prior	2,691
Prior		1,603
Revolving Loans Converted to Term Loans	0	287
Revolving Loans	400	511
Total	4,461	4,491
Residential Portfolio Segment | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	569
2020	706	571
2019	575	733
2018	77	121
2017	13	14
2016		898
Prior	3,408
Prior		3,181
Revolving Loans Converted to Term Loans	0	0
Revolving Loans	74	253
Total	5,422	5,771
Other
Financing Receivable, Credit Quality Indicator [Line Items]
2021	86,875
2020	54,771	43,526
2019	19,701	28,214
2018	24,604	30,101
2017	8,414	9,659
2016		5,641
Prior	23,463
Prior		19,681
Revolving Loans Converted to Term Loans	0	8
Revolving Loans	13,281	40,784
Total	231,109	177,614
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	86,875
2020	54,771	43,526
2019	19,687	28,195
2018	24,583	30,074
2017	8,414	9,646
2016		5,641
Prior	20,903
Prior		17,027
Revolving Loans Converted to Term Loans	0	0
Revolving Loans	13,144	40,779
Total	228,377	174,888
Other | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0	0
2019	0	1
2018	5	8
2017	0	0
2016		0
Prior	2,539
Prior		2,637
Revolving Loans Converted to Term Loans	0	0
Revolving Loans	135	1
Total	2,679	2,647
Other | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0	0
2019	14	18
2018	16	19
2017	0	13
2016		0
Prior	21
Prior		17
Revolving Loans Converted to Term Loans	0	8
Revolving Loans	2	4
Total	$ 53	$ 79