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Loans and Leases Held for Investment at Amortized Cost, Net of Allowance for Loan and Lease Losses - Gross Charge-Offs by Origination Year (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Term Loans and Leases by Origination Year
Year 1			$ 1,615
Year 2			64,321
Year 3			50,544
Year 4			0
Year 5			318
Prior			34
Total	$ 64,269	$ 15,852	116,832	$ 24,941
Consumer Portfolio Segment
Term Loans and Leases by Origination Year
Year 1			1,615
Year 2			64,321
Year 3			49,621
Year 4			0
Year 5			0
Prior			0
Total	63,345	14,707	115,557	23,724
Consumer Portfolio Segment \| Unsecured personal
Term Loans and Leases by Origination Year
Year 1			1,596
Year 2			63,295
Year 3			49,331
Year 4			0
Year 5			0
Prior			0
Total			114,222
Consumer Portfolio Segment \| Residential mortgages
Term Loans and Leases by Origination Year
Year 1			0
Year 2			0
Year 3			0
Year 4			0
Year 5			0
Prior			0
Total			0
Consumer Portfolio Segment \| Secured consumer
Term Loans and Leases by Origination Year
Year 1			19
Year 2			1,026
Year 3			290
Year 4			0
Year 5			0
Prior			0
Total			1,335
Commercial Portfolio Segment
Term Loans and Leases by Origination Year
Year 1			0
Year 2			0
Year 3			923
Year 4			0
Year 5			318
Prior			34
Total	$ 924	$ 1,145	1,275	$ 1,217
Commercial Portfolio Segment \| Equipment finance
Term Loans and Leases by Origination Year
Year 1			0
Year 2			0
Year 3			0
Year 4			0
Year 5			0
Prior			0
Total			0
Commercial Portfolio Segment \| Commercial real estate
Term Loans and Leases by Origination Year
Year 1			0
Year 2			0
Year 3			0
Year 4			0
Year 5			0
Prior			0
Total			0
Commercial Portfolio Segment \| Commercial and industrial
Term Loans and Leases by Origination Year
Year 1			0
Year 2			0
Year 3			923
Year 4			0
Year 5			318
Prior			34
Total			$ 1,275