Revised Consolidated Financial Statements Information - Consolidated Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Selling, general and administrative expenses									$ 0
Depreciation and amortization	$ 7,105			$ 7,298			$ 21,963	$ 21,720
Impairment charges	2,407						5,159
Loss from operations									0
Gain on debt extinguishment								19,640
Interest income	50,213			47,579			153,152	128,942
Interest income				47,579				128,942	178,482	$ 91,671
Total interest expense				11,638				28,721	41,893	9,508
Net interest income	34,866			35,941			108,484	100,221	136,589	82,163
Realized (gain) on sale of finance receivables										44,481
Realized and unrealized losses, net of recoveries	38,346			37,258			87,894	76,173	122,541	(54,761)
Net Interest Income After Losses and Recoveries	(3,480)			(1,317)			20,590	24,048	14,048	71,883
Total noninterest (loss) income	10,721			7,631			17,880	48,759	75,126	208,983
Total expenses	44,861			40,936			139,603	130,024	173,629	179,965
Loss from continuing operations before provision for income taxes	(37,620)			(34,622)			(101,133)	(57,217)	(84,455)	100,901
Provision (benefit) for income taxes	124			117			393	453	123	(19,680)
Net loss							(101,526)	(57,670)
Net loss from continuing operations				(34,739)				(57,670)	(84,578)	120,581
Net loss from discontinued operations				(47,988)				(165,838)	(280,033)	(571,045)
Net loss	$ (39,743)	$ (21,188)	$ (67,617)	$ (82,727)	$ (66,039)	$ (74,741)	$ (128,550)	$ (223,508)	$ (364,611)	$ (450,464)
Net loss per share attributable to common stockholders, continuing operations, basic	$ (20.88)			$ (19.89)			$ (56.38)	$ (33.16)	$ (48.52)	$ 69.95
Net loss per share attributable to common stockholders, continuing operations, diluted	(20.88)			(19.89)			(56.38)	(33.16)	(48.52)	69.95
Net loss per share attributable to common stockholders, Discontinued operations, basic	(1.11)			(27.48)			(15.01)	(95.36)	(160.65)	(331.26)
Net loss per share attributable to common stockholders, Discontinued operations, diluted	(1.11)			(27.48)			(15.01)	(95.36)	(160.65)	(331.26)
Total net loss per share attributable to common stockholders, basic	(21.99)			(47.38)			(71.39)	(128.52)	(209.17)	(261.31)
Total net loss per share attributable to common stockholders, diluted	$ (21.99)			$ (47.38)			$ (71.39)	$ (128.52)	$ (209.17)	$ (261.31)
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, basic	1,807,398			1,746,154			1,800,729	1,739,042	1,743,128	1,723,843
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, diluted	1,807,398			1,746,154			1,800,729	1,739,042	1,743,128	1,723,843
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue				$ 235,634				$ 657,279	$ 893,203	$ 1,948,901
Cost of sales				187,540				524,379	731,256	1,704,114
Total gross profit				48,094				132,900	161,947	244,787
Selling, general and administrative expenses				79,586				263,078	340,657	566,387
Depreciation and amortization				11,010				31,845	42,769	38,290
Impairment charges								1,353	48,748	211,873
Loss from operations				(42,502)				(163,376)	(270,227)	(571,763)
Gain on debt extinguishment								(19,640)	(37,878)	(164,684)
Interest expense				12,058				30,915	45,445	40,693
Interest income				5,506				16,369	21,158	19,363
Other loss (income), net				33,543				65,019	108,289	43,181
Loss from continuing operations before provision for income taxes				(82,597)				(223,301)	(364,925)	(471,590)
Provision (benefit) for income taxes				260				918	615	(19,680)
Net loss				$ (82,857)				$ (224,219)	$ (365,540)	$ (451,910)
Total net loss per share attributable to common stockholders, basic				$ (47.45)				$ (128.93)	$ (209.7)	$ (262.15)
Total net loss per share attributable to common stockholders, diluted				$ (47.45)				$ (128.93)	$ (209.7)	$ (262.15)
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, basic				1,746,154				1,739,042	1,743,128	1,723,843
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, diluted				1,746,154				1,739,042	1,743,128	1,723,843
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Selling, general and administrative expenses				$ (130)				$ (711)	$ (929)	$ (1,447)
Loss from operations				130				711	929	1,447
Loss from continuing operations before provision for income taxes				130				711	929	1,447
Net loss				130				711	929	1,447
Presentation Reclasses
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue				(52,668)				(149,566)	(205,988)	(174,631)
Cost of sales				(10,493)				(28,443)	(39,219)	(17,774)
Total gross profit				(42,175)				(121,123)	(166,769)	(156,857)
Selling, general and administrative expenses				(30,847)				(101,524)	(133,751)	(139,955)
Depreciation and amortization				(7,298)				(21,720)	(29,113)	(27,070)
Loss from operations				(4,030)				2,121	(3,905)	10,168
Gain on debt extinguishment								19,640	37,878	164,684
Interest expense				(7,114)				(16,737)	(25,889)	(13,862)
Interest income				2,004				7,019	7,940	3,429
Other loss (income), net				(33,543)				(65,019)	(108,289)	(43,181)
Interest income				47,579				128,942	178,482	91,671
Total interest expense				11,638				28,721	41,893	9,508
Net interest income				35,941				100,221	136,589	82,163
Realized (gain) on sale of finance receivables										(44,481)
Realized and unrealized losses, net of recoveries				37,258				76,173	122,541	(54,761)
Net Interest Income After Losses and Recoveries				(1,317)				24,048	14,048	71,883
Total noninterest (loss) income				7,631				48,759	75,126	208,983
Total expenses				40,936				130,024	173,629	179,965
Loss from continuing operations before provision for income taxes				(34,622)				(57,217)	(84,455)	100,901
Discontinued Operations
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue				(182,965)				(507,712)	(687,215)	(1,774,270)
Cost of sales				(177,047)				(495,936)	(692,037)	(1,686,340)
Total gross profit				(5,918)				(11,776)	4,822	(87,930)
Selling, general and administrative expenses				48,609				160,843	205,977	424,985
Depreciation and amortization				3,712				10,125	13,656	11,220
Impairment charges								(1,353)	(48,748)	(211,873)
Loss from operations				46,403				160,545	273,203	560,148
Interest expense				(4,944)				(14,178)	(19,556)	(26,831)
Interest income				3,502				9,350	13,218	15,934
Loss from continuing operations before provision for income taxes				47,845				165,373	279,541	$ 571,045
Provision (benefit) for income taxes				$ (143)				$ (465)	$ (492)