Loans (Major Classifications Of Loans) (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Major classifications of loans [Abstract]
Total loans, gross		$ 5,263,346	$ 3,739,171
Unamortized loan fees and costs		4,029	8,053
Total loans, including unamortized loan fees and costs	[1]	5,267,375	3,747,224	$ 3,136,662
SBL Non-Real Estate [Member]
Major classifications of loans [Abstract]
Total loans, gross		116,080	147,722
Total loans, including unamortized loan fees and costs	[1]	116,080	147,722	171,845
SBL Commercial Mortgage [Member]
Major classifications of loans [Abstract]
Total loans, gross		429,865	361,171
Total loans, including unamortized loan fees and costs	[1]	429,865	361,171	367,272
SBL Construction [Member]
Major classifications of loans [Abstract]
Total loans, gross		26,841	27,199
Total loans, including unamortized loan fees and costs	[1]	26,841	27,199	23,117
Small Business Loans [Member]
Major classifications of loans [Abstract]
Total loans, gross		572,786	536,092
Direct Lease Financing [Member]
Major classifications of loans [Abstract]
Total loans, gross		599,796	531,012
Total loans, including unamortized loan fees and costs	[1]	599,796	531,012	514,068
SBLOC/IBLOC [Member]
Major classifications of loans [Abstract]
Total loans, gross	[2]	2,369,106	1,929,581
Total loans, including unamortized loan fees and costs	[1]	2,369,106	1,929,581	1,834,523
Advisor Financing [Member]
Major classifications of loans [Abstract]
Total loans, gross	[3]	168,559	115,770
Total loans, including unamortized loan fees and costs	[1]	$ 168,559	115,770	81,143
Loan amount, loan-to-value ratio		70.00%
Real Estate Bridge Loans [Member]
Major classifications of loans [Abstract]
Total loans, gross		$ 1,488,119	621,702
Total loans, including unamortized loan fees and costs	[1]	1,488,119	621,702	128,699
Other Loans [Member]
Major classifications of loans [Abstract]
Total loans, gross	[4]	64,980	5,014
Total loans, including unamortized loan fees and costs	[1]	64,980	5,014	$ 4,917
Consumer - Other [Member]
Major classifications of loans [Abstract]
Demand deposit overdrafts reclassified as loan balances		1,000	322
Other Loans - Discontinued Assets [Member]
Major classifications of loans [Abstract]
Demand deposit overdrafts reclassified as loan balances		54,200
Other Loans - Discontinued Assets Of Residential Mortgage Loans [Member]
Major classifications of loans [Abstract]
Demand deposit overdrafts reclassified as loan balances		19,500
IBLOC [Member]
Major classifications of loans [Abstract]
Total loans, gross		$ 1,100,000	$ 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 September 30, 2022 and December 31, 2021, respectively, IBLOC loans amounted to $1.10 billion 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 $1.0 million and $322,000 at September 30, 2022 and December 31, 2021, respectively. Estimated overdraft charge-offs and recoveries are reflected in the allowance for credit losses and have been immaterial. September 30, 2022 includes $54.2 million of balances previously included in discontinued assets including $19.5 million of residential mortgage loans, with the balance comprised of commercial loans.