CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating activities:
Net loss	$ (43,529)	$ (42,616)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	11,692	9,315
Stock-based compensation	16,462	10,184
Amortization of debt discount and debt issuance costs	697	489
Amortization of right-of-use assets	831	563
Write-down for excess and obsolete inventories	2,098	1,706
Loss on disposal of assets	716	474
Other	590	(243)
Changes in operating assets and liabilities:
Accounts receivable	(2,478)	1,674
Inventories	(8,540)	(9,154)
Prepaid expenses and other current assets	(2,309)	(1,848)
Other assets	40	(119)
Accounts payable	5,820	7,637
Accrued expenses	(705)	(1,543)
Lease liabilities	(763)	(562)
Contract liabilities	1,883	275
Other long-term liabilities	(829)	(937)
Net cash used in operating activities	(18,324)	(24,705)
Investing activities:
Purchase of property and equipment	(16,278)	(13,257)
Purchase of intangible assets	(538)	(150)
Net cash used in investing activities	(16,816)	(13,407)
Financing activities:
Proceeds from term loan, net of debt discount	98,500
Payment of debt issuance costs	(3,193)
Net cash (paid) received from common stock exercises	(1,106)	1,301
Repayment of revolving credit facility	(27,500)
Proceeds from financed insurance	1,328	1,617
Other	(919)	(221)
Net cash provided by financing activities	67,110	2,697
Effect of exchange rate changes on cash	32	(21)
Net increase (decrease) in cash and cash equivalents	32,002	(35,436)
Cash and cash equivalents at beginning of period	84,696	187,248
Cash and cash equivalents at end of period	116,698	151,812
Supplemental disclosure of cash flow information:
Cash paid for interest	3,734	1,252
Supplemental disclosure of noncash activities:
Financed insurance	1,328	1,617
Purchases of property and equipment in accounts payable and accrued expenses	$ 1,851	$ 4,667