Loans - Schedule of Financing Receivables, Non Accrual Status (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	$ 46,885	$ 10,143
Total Non Accrual	51,682	13,437
Financing Receivables, Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	5,444,355	2,776,550
Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	7,004	3,039
Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	12,880	1,252
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	27,001	5,852
Real Estate Loans [Member] | Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	17,102	2,544
Total Non Accrual	10,178	2,411
Real Estate Loans [Member] | Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	2,246	3,227
Total Non Accrual	11,980	7,609
Real Estate Loans [Member] | Construction Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	2,432
Total Non Accrual	806
Real Estate Loans [Member] | Financing Receivables, Current [Member] | Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	1,173,979	323,600
Real Estate Loans [Member] | Financing Receivables, Current [Member] | Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	2,357,909	1,509,132
Real Estate Loans [Member] | Financing Receivables, Current [Member] | Construction Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	310,152	206,721
Real Estate Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	433	1,328
Real Estate Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	1,033	339
Real Estate Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	7,669	570
Real Estate Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	369	172
Real Estate Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	1,626
Real Estate Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	9,000	646
Real Estate Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	844	2,716
Real Estate Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	806
Other Loans [Member] | Commercial Loan Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	407	2,923
Total Non Accrual	1,365	2,961
Other Loans [Member] | Home Equity and Improvement Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	5,416	1,235
Total Non Accrual	1,537	449
Other Loans [Member] | Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	3,699	214
Total Non Accrual	1,624	7
Other Loans [Member] | Financing Receivables, Current [Member] | Commercial Loan Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	1,172,636	576,988
Other Loans [Member] | Financing Receivables, Current [Member] | Home Equity and Improvement Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	262,373	122,487
Other Loans [Member] | Financing Receivables, Current [Member] | Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	117,088	37,622
Other Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Loan Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	9	273
Other Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Home Equity and Improvement Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	3,440	956
Other Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	1,687	143
Other Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Loan Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	4	206
Other Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Home Equity and Improvement Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	839	240
Other Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	491	64
Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Loan Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	394	2,444
Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Home Equity and Improvement Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	1,137	39
Other Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	1,521	$ 7
PCD [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	15,583
Total Non Accrual	24,192
PCD [Member] | Financing Receivables, Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	50,218
PCD [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	402
PCD [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	1,882
PCD [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current/Total Past Due	$ 13,299