Loans, Allowance for Credit Losses and Credit Quality Financing Receivable Past Due (Details) $ in Thousands	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	518	301
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	60	25
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	123	82
Number of Loans Total Past Due | loan	701	408
Total loans	$ 13,587,286	$ 9,392,866
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	1
Financing Receivable, before Allowance for Credit Loss	13,540,590	9,371,470
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,677	9,450
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	37,927	4,168
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	7,092	7,778
Financial Asset, Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 46,696	$ 21,396
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	7	2
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	2	1
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	2	8
Number of Loans Total Past Due | loan	11	11
Total loans	$ 1,563,279	$ 2,103,152
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	1,563,279	2,103,152
Commercial And Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	252	672
Commercial And Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	143	318
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	24	785
Commercial And Industrial [Member] | Financial Asset, Not Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,562,860	2,101,377
Commercial And Industrial [Member] | Financial Asset, Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 419	$ 1,775
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	15	3
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	0	0
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	4	4
Number of Loans Total Past Due | loan	19	7
Total loans	$ 7,992,344	$ 4,173,927
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	7,992,344	4,173,927
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	32,845	409
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,339	515
Commercial Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	7,958,160	4,173,003
Commercial Real Estate [Member] | Financial Asset, Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 34,184	$ 924
Construction Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	0	0
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	0	2
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	0	0
Number of Loans Total Past Due | loan	0	2
Total loans	$ 1,165,457	$ 553,929
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	1,165,457	553,929
Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	2,794
Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Construction Loans [Member] | Financial Asset, Not Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,165,457	551,135
Construction Loans [Member] | Financial Asset, Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 0	$ 2,794
Small Business [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	11	14
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	6	6
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	4	4
Number of Loans Total Past Due | loan	21	24
Total loans	$ 193,189	$ 175,023
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	193,189	175,023
Small Business [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	53	273
Small Business [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	136	421
Small Business [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	24	59
Small Business [Member] | Financial Asset, Not Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	192,976	174,270
Small Business [Member] | Financial Asset, Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 213	$ 753
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	12	12
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	5	8
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	76	27
Number of Loans Total Past Due | loan	93	47
Total loans	$ 1,604,686	$ 1,296,183
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Financing Receivable, before Allowance for Credit Loss	1,604,686	1,296,183
Residential Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	714	5,507
Residential Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	2,709	2,150
Residential Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	3,922	3,648
Residential Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,597,341	1,284,878
Residential Real Estate [Member] | Financial Asset, Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 7,345	$ 11,305
Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	15	10
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	6	5
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	21	33
Number of Loans Total Past Due | loan	42	48
Total loans	$ 1,039,611	$ 1,068,790
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	0
Home Equity Line of Credit [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	381	203
Home Equity Line of Credit [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,375	733
Home Equity Line of Credit [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,671	2,633
Home Equity Line of Credit [Member] | Financial Asset, Not Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,036,184	1,065,221
Home Equity Line of Credit [Member] | Financial Asset, Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 3,427	$ 3,569
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	458	260	[1]
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	41	3	[1]
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	16	6	[1]
Number of Loans Total Past Due | loan	515	269	[1]
Total loans	$ 28,720	$ 21,862	[1]
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	1	[1]
Financing Receivable, before Allowance for Credit Loss	28,720	21,862
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	277	1	[1]
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	719	137	[1]
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	112	138	[1]
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	27,612	21,586	[1]
Consumer Portfolio Segment [Member] | Financial Asset, Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 1,108	$ 276	[1]

[1] Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances.