Securitizations and Variable Interest Entities - Summary of Select Information Related to VIEs (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Assets
Restricted cash	[1]	$ 41,644	$ 67,454
Total securities available for sale		1,620,262	345,702
Loans held for investment at fair value		4,539,915	4,705,302
Retail and certificate loans held for investment at fair value	[1]	10,488	55,425
Other assets	[1]	455,453	500,306
Liabilities
Borrowings	[1]	8,866	74,858
Retail notes and certificates		10,488	55,425
Other liabilities	[1]	222,801	292,617
Total liabilities		7,575,641	6,815,453
Consolidated
Assets
Restricted cash		3,454	8,048
Total securities available for sale		0	0
Loans held for investment at fair value		550	3,994
Retail and certificate loans held for investment at fair value		420	1,946
Other assets		14	206
Total assets		4,438	14,194
Liabilities
Borrowings		2,468	8,085
Retail notes and certificates		420	1,946
Other liabilities		4	29
Total liabilities		2,892	10,060
Total net assets (maximum loss exposure)		1,546	4,134
Unconsolidated
Assets
Restricted cash		0	0
Total securities available for sale		1,249,796	17,717
Loans held for investment at fair value		0	0
Retail and certificate loans held for investment at fair value		0	0
Other assets		31,531	10,464
Total assets		1,281,327	28,181
Liabilities
Borrowings		0	0
Retail notes and certificates		0	0
Other liabilities		3,301	0
Total liabilities		3,301	0
Total net assets (maximum loss exposure)		1,278,026	28,181
Total
Assets
Restricted cash		3,454	8,048
Total securities available for sale		1,249,796	17,717
Loans held for investment at fair value		550	3,994
Retail and certificate loans held for investment at fair value		420	1,946
Other assets		31,545	10,670
Total assets		1,285,765	42,375
Liabilities
Borrowings		2,468	8,085
Retail notes and certificates		420	1,946
Other liabilities		3,305	29
Total liabilities		6,193	10,060
Total net assets (maximum loss exposure)		$ 1,279,572	$ 32,315

[1] Includes amounts in consolidated variable interest entities (VIEs). See “Notes to Consolidated Financial Statements – Note 7. Securitizations and Variable Interest Entities.”