Loans (Delinquent Loans By Loan Category) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 11,525	$ 10,356
Total loans, gross	5,352,339	5,482,121
Total loans, including unamortized loan fees and costs	5,361,139	5,486,853
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	30,217	22,312
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	5,225	3,034
90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	1,744	7,775
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	48,711	43,477
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	5,312,428	5,443,376
SBL Non-Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,842	1,249
Total loans, gross	137,752	108,954
Total loans, including unamortized loan fees and costs	137,752	108,954
SBL Non-Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	84	1,312
SBL Non-Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	333	543
SBL Non-Real Estate [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	336	346
SBL Non-Real Estate [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	2,595	3,450
SBL Non-Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	135,157	105,504
SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	2,381	1,423
Total loans, gross	606,986	474,496
Total loans, including unamortized loan fees and costs	606,986	474,496
SBL Commercial Mortgage [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	2,183	1,853
SBL Commercial Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross		5
SBL Commercial Mortgage [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross		297
SBL Commercial Mortgage [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	4,564	3,578
SBL Commercial Mortgage [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	602,422	470,918
SBL Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	3,385	3,386
Total loans, gross	22,627	30,864
Total loans, including unamortized loan fees and costs	22,627	30,864
SBL Construction [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	3,385	3,386
SBL Construction [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	19,242	27,478
Direct Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	3,785	3,550
Total loans, gross	685,657	632,160
Total loans, including unamortized loan fees and costs	685,657	632,160
Direct Lease Financing [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	5,163	4,035
Direct Lease Financing [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	1,209	2,053
Direct Lease Financing [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	485	539
Direct Lease Financing [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	10,642	10,177
Direct Lease Financing [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	675,015	621,983
SBLOC/IBLOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	1,627,285	2,332,469
Total loans, including unamortized loan fees and costs	1,627,285	2,332,469
SBLOC/IBLOC [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	21,934	14,782
SBLOC/IBLOC [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	3,607	343
SBLOC/IBLOC [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	745	2,869
SBLOC/IBLOC [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	26,286	17,994
SBLOC/IBLOC [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	1,600,999	2,314,475
Advisor Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	221,612	172,468
Total loans, including unamortized loan fees and costs	221,612	172,468
Advisor Financing [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	221,612	172,468
Real Estate Bridge Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	1,999,782	1,669,031
Total loans, including unamortized loan fees and costs	1,999,782	1,669,031
Real Estate Bridge Loans [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	1,999,782	1,669,031
Other Loans II [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	132	748
Total loans, including unamortized loan fees and costs	50,638	61,679
Other Loans II [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	853	330
Other Loans II [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	76	90
Other Loans II [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	178	3,724
Other Loans II [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	1,239	4,892
Other Loans II [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	49,399	56,787
Unamortized Loan Fees And Costs [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, including unamortized loan fees and costs	8,800	4,732
Unamortized Loan Fees And Costs [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	8,800	$ 4,732
Payment Status [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	283
Total loans, gross	13,078
Payment Status [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	283
Payment Status [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	12,795
Payment Status [Member] | SBL Non-Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	156
Total loans, gross	651
Payment Status [Member] | SBL Non-Real Estate [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	156
Payment Status [Member] | SBL Non-Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	495
Payment Status [Member] | Direct Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	127
Total loans, gross	127
Payment Status [Member] | Direct Lease Financing [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	127
Payment Status [Member] | Real Estate Bridge Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	12,300
Payment Status [Member] | Real Estate Bridge Loans [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross	$ 12,300