Loans and Leases (Details 1) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	$ 73,508	$ 48,755
Delinquent loans in loan portfolio
30-89 Days Past Due		12,232
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		36,523
Current	22,868,040	19,034,622
Loans held for investment, net	22,941,548	19,083,377
30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	55,042
90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	18,466
Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	57,714	36,868
Delinquent loans in loan portfolio
30-89 Days Past Due		7,350
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		29,518
Current	11,121,006	7,863,068
Loans held for investment, net	11,178,720	7,899,936
Mortgages [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	45,812
Mortgages [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	11,902
Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	9,494	759
Delinquent loans in loan portfolio
30-89 Days Past Due		759
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		0
Current	3,427,633	3,359,522
Loans held for investment, net	3,437,127	3,360,281
Real Estate Construction [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	7,271
Real Estate Construction [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	2,223
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	5,020	9,757
Delinquent loans in loan portfolio
30-89 Days Past Due		2,863
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		6,894
Current	7,863,031	7,493,148
Loans held for investment, net	7,868,051	7,502,905
Commercial Portfolio Segment [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	955
Commercial Portfolio Segment [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	4,065
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	1,280	1,371
Delinquent loans in loan portfolio
30-89 Days Past Due		1,260
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		111
Current	456,370	318,884
Loans held for investment, net	457,650	320,255
Consumer Portfolio Segment [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	1,004
Consumer Portfolio Segment [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	276
Asset Based [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	464	2,128
Delinquent loans in loan portfolio
30-89 Days Past Due		0
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		2,128
Current	4,075,013	3,427,155
Loans held for investment, net	4,075,477	3,429,283
Asset Based [Member] | Commercial Portfolio Segment [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	0
Asset Based [Member] | Commercial Portfolio Segment [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	464
Venture Capital Loans [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	0	540
Delinquent loans in loan portfolio
30-89 Days Past Due		540
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		0
Current	2,320,593	1,697,968
Loans held for investment, net	2,320,593	1,698,508
Venture Capital Loans [Member] | Commercial Portfolio Segment [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	0
Venture Capital Loans [Member] | Commercial Portfolio Segment [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0
Other Commercial [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	4,556	7,089
Delinquent loans in loan portfolio
30-89 Days Past Due		2,323
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		4,766
Current	1,467,425	2,368,025
Loans held for investment, net	1,471,981	2,375,114
Other Commercial [Member] | Commercial Portfolio Segment [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	955
Other Commercial [Member] | Commercial Portfolio Segment [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	3,601
Commercial Real Estate Construction Loan Receivable [Member] | Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	0	0
Delinquent loans in loan portfolio
30-89 Days Past Due		0
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		0
Current	832,591	1,117,121
Loans held for investment, net	832,591	1,117,121
Commercial Real Estate Construction Loan Receivable [Member] | Real Estate Construction [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	0
Commercial Real Estate Construction Loan Receivable [Member] | Real Estate Construction [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0
Residential Real Estate Construction Financing Receivable [Member] | Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	9,494	759
Delinquent loans in loan portfolio
30-89 Days Past Due		759
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		0
Current	2,595,042	2,242,401
Loans held for investment, net	2,604,536	2,243,160
Residential Real Estate Construction Financing Receivable [Member] | Real Estate Construction [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	7,271
Residential Real Estate Construction Financing Receivable [Member] | Real Estate Construction [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	2,223
Commercial Real Estate [Member] | Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	7,543	35,895
Delinquent loans in loan portfolio
30-89 Days Past Due		6,750
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		29,145
Current	3,754,756	4,060,776
Loans held for investment, net	3,762,299	4,096,671
Commercial Real Estate [Member] | Mortgages [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	5,307
Commercial Real Estate [Member] | Mortgages [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	2,236
Residential Real Estate [Member] | Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Recorded Investment Total Past Due	50,171	973
Delinquent loans in loan portfolio
30-89 Days Past Due		600
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due		373
Current	7,366,250	3,802,292
Loans held for investment, net	7,416,421	$ 3,803,265
Residential Real Estate [Member] | Mortgages [Member] | 30 To 89 Days Past Due
Delinquent loans in loan portfolio
30-89 Days Past Due	40,505
Residential Real Estate [Member] | Mortgages [Member] | 90 Or More Days Past Due
Delinquent loans in loan portfolio
Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	$ 9,666