Loans - Summary of Term Loans by Origination Year (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 1,269,184
2019	563,899
2018	331,051
2017	190,687
2016	76,347
Prior	89,377
Financing Receivable, Converted	15,249
Revolving Loans	595,683
Total	3,131,477
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,239,062
2019	535,477
2018	318,046
2017	180,269
2016	47,210
Prior	85,529
Financing Receivable, Converted	14,954
Revolving Loans	510,168
Total	2,930,715
Commercial and industrial | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	26,347
2019	13,354
2018	4,850
2017	6,468
2016	24,044
Prior	175
Financing Receivable, Converted	0
Revolving Loans	62,293
Total	137,531
Commercial and industrial | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	3,775
2019	15,068
2018	8,155
2017	3,950
2016	5,093
Prior	3,673
Financing Receivable, Converted	295
Revolving Loans	23,222
Total	63,231
Commercial Real Estate-Investor Owned Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	251,455
2019	327,035
2018	213,720
2017	127,391
2016	166,834
Prior	184,716
Financing Receivable, Converted	3,284
Revolving Loans	35,460
Total	1,309,895
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	246,319
2019	321,849
2018	204,242
2017	126,567
2016	153,904
Prior	181,761
Financing Receivable, Converted	3,284
Revolving Loans	35,460
Total	1,273,386
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	5,136
2019	4,220
2018	1,192
2017	369
2016	12,681
Prior	1,275
Financing Receivable, Converted	0
Revolving Loans	0
Total	24,873
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	966
2018	8,286
2017	455
2016	249
Prior	1,680
Financing Receivable, Converted	0
Revolving Loans	0
Total	11,636
Commercial Real Estate-Owner Occupied Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	157,387
2019	203,638
2018	97,152
2017	89,245
2016	53,523
Prior	89,465
Financing Receivable, Converted	2,756
Revolving Loans	45,383
Total	738,549
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	147,313
2019	200,519
2018	92,624
2017	79,058
2016	44,990
Prior	80,172
Financing Receivable, Converted	2,756
Revolving Loans	42,883
Total	690,315
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	9,473
2019	1,963
2018	261
2017	9,729
2016	8,533
Prior	5,074
Financing Receivable, Converted	0
Revolving Loans	2,500
Total	37,533
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	601
2019	1,156
2018	4,267
2017	458
2016	0
Prior	4,219
Financing Receivable, Converted	0
Revolving Loans	0
Total	10,701
Construction Real Estate Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	78,391
2019	168,885
2018	123,163
2017	48,602
2016	28,060
Prior	13,489
Financing Receivable, Converted	0
Revolving Loans	20,631
Total	481,221
Construction Real Estate Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	75,983
2019	167,936
2018	121,909
2017	37,555
2016	28,060
Prior	12,906
Financing Receivable, Converted	0
Revolving Loans	20,631
Total	464,980
Construction Real Estate Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,408
2019	722
2018	1,254
2017	11,047
2016	0
Prior	546
Financing Receivable, Converted	0
Revolving Loans	0
Total	15,977
Construction Real Estate Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	227
2018	0
2017	0
2016	0
Prior	37
Financing Receivable, Converted	0
Revolving Loans	0
Total	264
Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
2020	26,813
2019	35,245
2018	23,674
2017	19,944
2016	34,640
Prior	120,508
Financing Receivable, Converted	870
Revolving Loans	64,357
Total	326,051
Residential Portfolio Segment | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	26,448
2019	33,085
2018	22,074
2017	19,931
2016	34,427
Prior	115,036
Financing Receivable, Converted	591
Revolving Loans	63,505
Total	315,097
Residential Portfolio Segment | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	181
2019	895
2018	842
2017	0
2016	0
Prior	2,027
Financing Receivable, Converted	279
Revolving Loans	802
Total	5,026
Residential Portfolio Segment | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	184
2019	1,265
2018	758
2017	13
2016	213
Prior	3,445
Financing Receivable, Converted	0
Revolving Loans	50
Total	5,928
Other
Financing Receivable, Credit Quality Indicator [Line Items]
2020	8,758
2019	25,570
2018	20,618
2017	686
2016	3,705
Prior	34,474
Financing Receivable, Converted	10
Revolving Loans	43,979
Total	137,800
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	8,758
2019	25,567
2018	20,615
2017	682
2016	3,705
Prior	34,455
Financing Receivable, Converted	0
Revolving Loans	43,971
Total	137,753
Other | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	2
2018	0
2017	0
2016	0
Prior	0
Financing Receivable, Converted	0
Revolving Loans	1
Total	3
Other | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	1
2018	3
2017	4
2016	0
Prior	19
Financing Receivable, Converted	10
Revolving Loans	7
Total	$ 44