STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ (9,556)	$ 49,758	$ 112
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization expense	1,424	946	517
Benefit for deferred income taxes	(3,732)	(6,507)	0
Loss on disposal of property and equipment		2	120
Stock-based compensation	81,139	8,713	179
Changes in operating assets and liabilities:
Accounts receivable	3,339	(4,023)	(1,266)
Inventory	(36,333)	(35,435)	(763)
Prepaid expenses and other current assets	(735)	(4,672)	254
Other assets	127	38	(342)
Accounts payable	2,855	1,207	2,715
Accrued expenses	17,983	4,266	464
Deferred revenue	(1,185)	794	(712)
Accrued compensation and benefits	2,250	2,366	713
Returns reserve	1,084	901	267
Sales tax payable	652	527	636
Income tax payable	4,428	105	0
Gift card liability	2,571	2,028	722
Deferred rent and lease incentive	(117)	734	2,915
Other non-current liabilities	243	0	0
Net cash provided by operating activities	66,437	21,748	6,531
Cash flows from investing activities:
Purchases of property and equipment	(2,712)	(2,262)	(4,761)
Net cash used in investing activities	(2,712)	(2,262)	(4,761)
Cash flows from financing activities:
Proceeds from issuance of Class A common stock in initial public offering, net of underwriting discounts	95,881	0	0
Payments of initial public offering issuance costs, net of reimbursements	(780)	0	0
Payment of debt issuance and financing costs	(181)	(98)	0
Proceeds from capital contributions	1,301	0	14,000
Proceeds from stock option exercises	907	392	0
Tax payments related to net share settlements on restricted stock units	(21,556)	0	0
Net cash provided by financing activities	75,572	294	14,000
Net increase in cash, cash equivalents, and restricted cash	139,297	19,780	15,770
Cash, cash equivalents, and restricted cash, beginning of period	58,133	38,353	22,583
Cash, cash equivalents, and restricted cash, end of period	197,430	58,133	38,353
Supplemental disclosures:
Cash paid for income taxes, net of refunds received	15,004	18,162	0
Cash paid for interest	0	0	0
Property and equipment in accounts payable and accrued expenses	32	236	770
Deferred offering costs recorded in stockholders' equity upon initial public offering, net of related tax impacts	$ 220	$ 0	$ 0