Loans - Schedule of Amortized Cost Basis of Loans by Credit Quality Indicator and Class of Loans Based on Recent Analysis Performed (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment [Line Items]
Total	$ 5,113,917	$ 2,786,693
Residential [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2020	58,175
2019	162,731
2018	207,093
2017	190,319
2016	187,044
Prior	441,152
Revolving Loans	2,705
Total	1,249,219
Commercial [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2020	105,546
2019	452,488
2018	372,684
2017	396,755
2016	247,736
Prior	567,992
Revolving Loans	22,075
Total	2,165,276
Construction [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2020	4,502
2019	148,694
2018	94,356
2017	49,665
2016	13,137
Prior	437
Total	310,791
Commercial [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2020	55,904
2019	192,354
2018	108,503
2017	64,829
2016	34,592
Prior	44,224
Revolving Loans	371,562
Total	871,968
Home Equity and Improvement [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2020	2,741
2019	10,976
2018	5,857
2017	9,960
2016	9,489
Prior	36,600
Revolving Loans	219,527
Total	295,150
Consumer Finance [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2020	11,543
2019	52,569
2018	30,904
2017	17,180
2016	8,699
Prior	4,922
Revolving Loans	6,499
Total	132,316
PCD [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2019	418
2018	3,439
2017	28,090
2016	4,055
Prior	33,258
Revolving Loans	19,937
Total	89,197
Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total	4,607,744	2,351,398
Pass [Member] | Residential [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2020	58,175
2019	162,634
2018	206,799
2017	190,256
2016	186,702
Prior	437,887
Revolving Loans	2,691
Total	1,245,144
Pass [Member] | Commercial [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2020	105,546
2019	450,533
2018	370,078
2017	391,162
2016	243,768
Prior	530,218
Revolving Loans	18,654
Total	2,109,959
Pass [Member] | Construction [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2020	4,502
2019	148,694
2018	94,356
2017	49,665
2016	13,137
Prior	437
Total	310,791
Pass [Member] | Commercial [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2020	55,857
2019	191,337
2018	108,146
2017	61,628
2016	34,192
Prior	43,359
Revolving Loans	345,398
Total	839,917
Pass [Member] | Home Equity and Improvement [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2020	2,741
2019	10,976
2018	5,857
2017	9,960
2016	9,489
Prior	36,520
Revolving Loans	219,285
Total	294,828
Pass [Member] | Consumer Finance [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2020	11,543
2019	52,569
2018	30,898
2017	17,149
2016	8,692
Prior	4,922
Revolving Loans	6,499
Total	132,272
Pass [Member] | PCD [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2019	292
2018	546
2017	1,015
2016	783
Prior	16,847
Revolving Loans	8,368
Total	27,851
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total	70,063	53,419
Special Mention [Member] | Residential [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2019	97
2018	58
2016	123
Prior	98
Revolving Loans	14
Total	390
Special Mention [Member] | Commercial [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2019	1,664
2018	999
2017	3,096
2016	2,628
Prior	18,935
Revolving Loans	723
Total	28,045
Special Mention [Member] | Commercial [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2020	25
2019	881
2018	129
2017	2,970
2016	60
Prior	592
Revolving Loans	15,820
Total	20,477
Special Mention [Member] | PCD [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2019	24
2018	2,783
2017	9,697
2016	1,496
Prior	4,441
Revolving Loans	2,710
Total	21,151
Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total	83,079	$ 34,648
Substandard [Member] | Residential [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2018	236
2017	63
2016	219
Prior	3,167
Total	3,685
Substandard [Member] | Commercial [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
2019	291
2018	1,607
2017	2,497
2016	1,340
Prior	18,839
Revolving Loans	2,698
Total	27,272
Substandard [Member] | Commercial [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2020	22
2019	136
2018	228
2017	231
2016	340
Prior	273
Revolving Loans	10,344
Total	11,574
Substandard [Member] | Home Equity and Improvement [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Prior	80
Revolving Loans	242
Total	322
Substandard [Member] | Consumer Finance [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2017	31
Total	31
Substandard [Member] | PCD [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2019	102
2018	110
2017	17,378
2016	1,776
Prior	11,970
Revolving Loans	8,859
Total	40,195
Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total	13
Doubtful [Member] | Consumer Finance [Member] | Other Loans [Member]
Financing Receivable Recorded Investment [Line Items]
2018	6
2016	7
Total	$ 13