Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ 23,254	$ 32,277	$ (9,372)
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization expense	11,843	7,926	6,402
Stock-based compensation expense	57,415	29,992	16,009
Inventory write-down	2,972	1,817	1,446
Impairment of internal-use software			959
Unrealized interest on held to maturity securities	(5,055)
Other	358	117	106
Changes in assets and liabilities:
Accounts receivable, net	(2,853)	(14,456)	(6,261)
Related party accounts receivable		736	337
Inventories	(36,992)	(13,096)	(2,070)
Prepaid expenses and other assets	(7,460)	(1,859)	2,951
Accounts payable	2,468	5,826	2,606
Accrued expenses and other liabilities	(6,198)	9,798	3,491
Net cash provided by operating activities	39,752	59,078	16,604
Cash flows from investing activities
Purchase of held to maturity securities	(673,370)
Proceeds from maturity of held to maturity securities	148,931
Purchase of property and equipment	(31,793)	(30,878)	(6,098)
Cash paid for intangibles	(3,856)	(2,910)	(1,695)
Net cash used in investing activities	(560,088)	(33,788)	(7,793)
Cash flows from financing activities
Tax withholding paid on behalf of employees for net share settlement	(37,552)		(3,493)
Proceeds from public offering	33,977	461,264	48,800
Payments for offering costs	(947)	(618)	(3,011)
Proceeds from loans from financial institutions			35,000
Principal payments on loans to financial institutions			(76,000)
Net cash provided by (used in) financing activities	(4,522)	460,646	1,296
Net increase (decrease) in cash and cash equivalents	(524,858)	485,936	10,107
Cash and cash equivalents
Beginning of period	559,461	73,525	63,418
End of period	34,603	559,461	73,525
Supplemental disclosure of cash flow information
Interest paid during the period			799
Income taxes paid	58	24	1
Supplemental disclosure of noncash flow information
Unpaid property and equipment	747	1,437	343
Unpaid intangibles, net	606	3,178
Right-of-use assets acquired under operating leases	$ 4,761	$ 689	$ 382