Loans (Major Classifications Of Loans) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Major classifications of loans [Abstract]
Total loans, gross		$ 4,156,261		$ 3,739,171
Unamortized loan fees and costs		8,037		8,053
Total loans, including unamortized loan fees and costs	[1]	4,164,298	$ 2,827,076	3,747,224
Repayment of loans		50,591	47,904
SBL Non Real Estate [Member]
Major classifications of loans [Abstract]
Total loans, gross		122,387		147,722
Total loans, including unamortized loan fees and costs	[1]	122,387	305,446	147,722
SBL Commercial Mortgage [Member]
Major classifications of loans [Abstract]
Total loans, gross		385,559		361,171
Total loans, including unamortized loan fees and costs	[1]	385,559	320,013	361,171
SBL Construction [Member]
Major classifications of loans [Abstract]
Total loans, gross		31,432		27,199
Total loans, including unamortized loan fees and costs	[1]	31,432	20,692	27,199
Small Business Loans [Member]
Major classifications of loans [Abstract]
Total loans, gross		539,378		536,092
Direct Lease Financing [Member]
Major classifications of loans [Abstract]
Total loans, gross		538,616		531,012
Total loans, including unamortized loan fees and costs	[1]	538,616	484,316	531,012
SBLOC/IBLOC [Member]
Major classifications of loans [Abstract]
Total loans, gross	[2]	2,067,233		1,929,581
Total loans, including unamortized loan fees and costs	[1]	2,067,233	1,622,359	1,929,581
Advisor Financing [Member]
Major classifications of loans [Abstract]
Total loans, gross	[3]	146,461		115,770
Total loans, including unamortized loan fees and costs	[1]	$ 146,461	58,919	115,770
Loan amount, loan-to-value ratio		70.00%
Real Estate Bridge Lending [Member]
Major classifications of loans [Abstract]
Total loans, gross		$ 803,477		621,702
Total loans, including unamortized loan fees and costs	[1]	803,477		621,702
Other Loans [Member]
Major classifications of loans [Abstract]
Total loans, gross	[4]	61,096		5,014
Total loans, including unamortized loan fees and costs	[1]	61,096	$ 6,452	5,014
Consumer - Other [Member]
Major classifications of loans [Abstract]
Demand deposit overdrafts reclassified as loan balances		310		322
PPP Loans [Member]
Major classifications of loans [Abstract]
Total loans, gross		23,700		44,800
Repayment of loans		21,100
IBLOC [Member]
Major classifications of loans [Abstract]
Total loans, gross		$ 907,100		$ 788,300

[1] The ending balance for loans in the unallocated column represents deferred costs and fees.

[2] Securities Backed Lines of Credit, or SBLOC, are collateralized by marketable securities, while Insurance Backed Lines of Credit, or IBLOC, are collateralized by the cash surrender value of insurance policies. At March 31, 2022 and December 31, 2021, respectively, IBLOC loans amounted to $907.1 million and $788.3 million.

[3] In 2020 the Company began originating loans to investment advisors for purposes of debt refinance, acquisition of another firm or internal succession. Maximum loan amounts are subject to loan-to-value ratios of 70%, based on third-party business appraisals, but may be increased depending upon the debt service coverage ratio. Personal guarantees and blanket business liens are obtained as appropriate.

[4] Includes demand deposit overdrafts reclassified as loan balances totaling $310,000 and $322,000 at March 31, 2022 and December 31, 2021, respectively. Estimated overdraft charge-offs and recoveries are reflected in the allowance for credit losses and have been immaterial.