Loans (Delinquent Loans By Loan Category) (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 31, 2025 USD ($) loan	Sep. 30, 2024	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			$ 27,934		$ 11,525
Total loans, gross			6,100,291		5,352,339
Total loans, including unamortized loan fees and costs			6,113,628		5,361,139	$ 5,486,853
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			41,757		30,217
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			4,412		5,225
90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			5,830		1,744
Non- accrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			27,934		11,525
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			79,933		48,711
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			6,033,695		5,312,428
SBL Non-Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			2,635		1,842
Total loans, gross			190,322		137,752
Total loans, including unamortized loan fees and costs			190,322		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			229		84
SBL Non-Real Estate [Member] \| 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross					333
SBL Non-Real Estate [Member] \| 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			871		336
SBL Non-Real Estate [Member] \| Non- accrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			2,635		1,842
SBL Non-Real Estate [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			3,735		2,595
SBL Non-Real Estate [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			186,587		135,157
SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			4,885		2,381
Total loans, gross			662,091		606,986
Total loans, including unamortized loan fees and costs			662,091		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
SBL Commercial Mortgage [Member] \| 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			336
SBL Commercial Mortgage [Member] \| Non- accrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			4,885		2,381
SBL Commercial Mortgage [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			5,221		4,564
SBL Commercial Mortgage [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			656,870		602,422
SBL Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			1,585		3,385
Total loans, gross			34,685		22,627
Total loans, including unamortized loan fees and costs			34,685		22,627	30,864
SBL Construction [Member] \| Non- accrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			1,585		3,385
SBL Construction [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			1,585		3,385
SBL Construction [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			33,100		19,242
Direct Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			6,026		3,785
Total loans, gross			700,553		685,657
Total loans, including unamortized loan fees and costs			700,553		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			7,069		5,163
Direct Lease Financing [Member] \| 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			1,923		1,209
Direct Lease Financing [Member] \| 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			1,088		485
Direct Lease Financing [Member] \| Non- accrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			6,026		3,785
Direct Lease Financing [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			16,106		10,642
Direct Lease Financing [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			684,447		675,015
SBLOC/IBLOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			1,564,018		1,627,285
Total loans, including unamortized loan fees and costs			1,564,018		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			20,991		21,934
SBLOC/IBLOC [Member] \| 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			1,808		3,607
SBLOC/IBLOC [Member] \| 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			3,322		745
SBLOC/IBLOC [Member] \| Non- accrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			503
SBLOC/IBLOC [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			26,624		26,286
SBLOC/IBLOC [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			1,537,394		1,600,999
Advisor Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			273,896		221,612
Total loans, including unamortized loan fees and costs			$ 273,896		221,612	172,468
Loan amount, loan-to-value ratio			70.00%
Advisor Financing [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			$ 273,896		221,612
Real Estate Bridge Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			12,300	$ 39,400	12,300
Total loans, gross			2,109,041		1,999,782
Total loans, including unamortized loan fees and costs			$ 2,109,041		1,999,782	$ 1,669,031
Loan amount, weighted average loan-to-value ratio			73
Loan amount, loan-to-value ratio			63.00%
Real Estate Bridge Loans [Member] \| Non- accrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			$ 12,300
Real Estate Bridge Loans [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			12,300
Real Estate Bridge Loans [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			2,096,741		1,999,782
Consumer Fintech [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			454,357
Total loans, including unamortized loan fees and costs			454,357
Consumer Fintech [Member] \| 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			13,419
Consumer Fintech [Member] \| 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			681
Consumer Fintech [Member] \| 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			213
Consumer Fintech [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			14,313
Consumer Fintech [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			440,044
Other Loans II [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, including unamortized loan fees and costs			111,328		50,638
Other Loans II [Member] \| 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			49		853
Other Loans II [Member] \| 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross					76
Other Loans II [Member] \| 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross					178
Other Loans II [Member] \| Non- accrual [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual					132
Other Loans II [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			49		1,239
Other Loans II [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			111,279		49,399
Unamortized Loan Fees And Costs [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, including unamortized loan fees and costs			13,337		8,800
Unamortized Loan Fees And Costs [Member] \| Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans, gross			13,337		$ 8,800
Forecast [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 9,800
Number Of Loans \| loan	2
Payment Delay as a result of Payment Deferral [Member] \| Real Estate Bridge Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			12,300
Loan amount, weighted average loan-to-value ratio		84
Loan amount, loan-to-value ratio		62.00%
Accounted For At Fair Value [Member] \| Real Estate Bridge Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual			$ 11,200