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Loans and the Allowance for Credit Losses (Details) - Aging analysis - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Nonaccrual		$ 61,700	$ 61,696
Total Past Due		84,625	98,000
Current		6,753,726	6,149,681
Loans		6,838,351	6,247,681
30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		7,364	18,544
60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		2,030	4,939
90 Days or Greater Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		13,531	12,821
Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual		30,062	33,019
Total Past Due		39,553	38,204
Current		1,259,875	1,483,763
Loans	[1]	1,299,428	1,521,967
Commercial Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		4,305	1,445
Commercial Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		729	558
Commercial Portfolio Segment [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		4,457	3,182
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual		25,393	10,111
Total Past Due		33,959	33,064
Current		4,707,631	3,750,486
Loans		4,741,590	3,783,550
Commercial Real Estate Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		1,622	13,258
Commercial Real Estate Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		1,009	4,140
Commercial Real Estate Portfolio Segment [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		5,935	5,555
Commercial Construction Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual		3,150	14,015
Total Past Due		3,150	16,487
Current		537,028	601,260
Loans		540,178	617,747
Commercial Construction Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due			2,472
Commercial Construction Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due
Commercial Construction Portfolio Segment [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due
Residential Real Estate Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual		3,095	4,551
Total Past Due		7,963	10,243
Current		247,306	312,321
Loans		255,269	322,564
Residential Real Estate Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		1,437	1,367
Residential Real Estate Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		292	241
Residential Real Estate Portfolio Segment [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due		3,139	4,084
Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual
Total Past Due			2
Current		1,886	1,851
Loans		1,886	1,853
Consumer Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due			2
Consumer Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due
Consumer Portfolio Segment [Member] | 90 Days or Greater Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due
[1] Included in commercial loans as of December 31, 2021 and December 31, 2020 were Paycheck Protection Program (“PPP”) loans of $93.1 million and $397.5 million, respectively. These loans are 100% federally guaranteed and currently not subject to any allocation of allowance for credit losses.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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