Loans (Delinquent Loans By Loan Category) (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual		$ 3,698	$ 3,161
Loans Receivable, Gross		4,748,081	3,739,171
Total loans, including unamortized loan fees and costs	[1]	4,754,697	3,747,224	$ 2,915,344
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		7,702	9,193
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		3,291	4,339
90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		4,848	461
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		19,539	17,154
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		4,735,158	3,730,070
SBL Non Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual		895	1,313
Loans Receivable, Gross		100,494	132,745
Total loans, including unamortized loan fees and costs	[1]	112,854	147,722	228,958
SBL Non Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		1,327	1,375
SBL Non Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		1,144	3,138
SBL Non Real Estate [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		608	441
SBL Non Real Estate [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		3,974	6,267
SBL Non Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		108,880	141,455
SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual		1,423	812
Loans Receivable, Gross		419,541	353,469
Total loans, including unamortized loan fees and costs	[1]	425,219	361,171	343,487
SBL Commercial Mortgage [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		2,134
SBL Commercial Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		7	220
SBL Commercial Mortgage [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		3,564	1,032
SBL Commercial Mortgage [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		421,655	360,139
SBL Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual		710	710
Loans Receivable, Gross		27,042	27,199
Total loans, including unamortized loan fees and costs	[1]	27,042	27,199	18,494
SBL Construction [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		710	710
SBL Construction [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		26,332	26,489
Direct Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			254
Loans Receivable, Gross		583,086	531,012
Total loans, including unamortized loan fees and costs	[1]	583,086	531,012	506,424
Direct Lease Financing [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		932	1,833
Direct Lease Financing [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		639	692
Direct Lease Financing [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		589	20
Direct Lease Financing [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		2,160	2,799
Direct Lease Financing [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		580,926	528,213
SBLOC/IBLOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, including unamortized loan fees and costs	[1]	2,274,256	1,929,581	1,729,628
SBLOC/IBLOC [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		2,021	5,985
SBLOC/IBLOC [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		1,407	289
SBLOC/IBLOC [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		94
SBLOC/IBLOC [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		3,522	6,274
SBLOC/IBLOC [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		2,270,734	1,923,307
Advisor Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		155,235	115,770
Total loans, including unamortized loan fees and costs	[1]	155,235	115,770	$ 72,190
Advisor Financing [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		155,235	115,770
Real Estate Bridge Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		1,106,875	621,702
Total loans, including unamortized loan fees and costs	[1]	1,106,875	621,702
Real Estate Bridge Lending [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		1,106,875	621,702
Other Loans II [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual		670	72
Total loans, including unamortized loan fees and costs		63,514	5,014
Other Loans II [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		1,288
Other Loans II [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		94
Other Loans II [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		3,557
Other Loans II [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		5,609	72
Other Loans II [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		57,905	4,942
Unamortized Loan Fees And Costs [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, including unamortized loan fees and costs		6,616	8,053
Unamortized Loan Fees And Costs [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Receivable, Gross		$ 6,616	$ 8,053

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