Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 591,003	$ 925,276
Restricted cash	127,278	20,544
Short-term investments	33,737	131,561
Accounts receivable, net of allowances for credit losses of $1,298 and $160	69,594	54,719
Inventory	358,221	49,158
Loans held for sale	35,759	42,539
Prepaid expenses	22,948	12,131
Other current assets	7,524	4,898
Total current assets	1,246,064	1,240,826
Property and equipment, net	58,671	43,988
Right-of-use assets, net	54,200	44,149
Long-term investments	54,828	11,922
Goodwill	409,382	9,186
Intangible assets, net	185,929	1,830
Other assets, noncurrent	12,898	8,619
Total assets	2,021,972	1,360,520
Current liabilities
Accounts payable	12,546	5,644
Accrued and other liabilities	118,122	82,644
Warehouse credit facilities	33,043	39,029
Secured revolving credit facility	199,781	23,949
Convertible senior notes, net	23,280	22,482
Lease liabilities	15,040	11,973
Total current liabilities	401,812	185,721
Lease liabilities, noncurrent	55,222	49,339
Convertible senior notes, net, noncurrent	1,214,017	488,268
Payroll tax liabilities, noncurrent	0	6,812
Deferred tax liabilities	1,201	0
Total liabilities	1,672,252	730,140
Commitments and contingencies (Note 8)
Series A convertible preferred stock—par value $0.001 per share; 10,000,000 shares authorized; 40,000 and 40,000 shares issued and outstanding at December 31, 2021 and 2020, respectively	39,868	39,823
Stockholders’ equity
Common stock—par value $0.001 per share; 500,000,000 shares authorized; 106,308,767 and 103,000,594 shares issued and outstanding at December 31, 2021 and 2020, respectively	106	103
Additional paid-in capital	682,084	860,556
Accumulated other comprehensive (loss) income	(174)	211
Accumulated deficit	(372,164)	(270,313)
Total stockholders’ equity	309,852	590,557
Total liabilities, mezzanine equity, and stockholders’ equity	$ 2,021,972	$ 1,360,520