Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (25,016)	$ (15,142)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	3,386	4,043
Depreciation and amortization	1,409	427
Amortization of contract acquisition costs	2,178	652
Amortization of debt issuance costs	552	219
Deferred tax assets	13	41
Provision for credit losses	488	192
Loss on sale of property and equipment	0	14
Changes in assets and liabilities:
Accounts receivable	(7,064)	(1,912)
Inventories	(8,191)	(12,177)
Other current assets and prepaid expenses	(2,053)	(5,611)
Other long-term assets	(2,011)	(385)
Accounts payable	(1,330)	5,755
Accrued liabilities	1,706	(5,989)
Operating leases, net	(16)	30
Deferred revenue	388	239
Net cash used in operating activities	(37,064)	(29,604)
Cash flows from investing activities:
Acquisition of property and equipment	(11,153)	(321)
Proceeds from maturities of marketable investments	95,000	0
Purchase of marketable investments	(23,467)	(74,058)
Net cash provided by (used in) investing activities	60,380	(74,379)
Cash flows from financing activities:
Proceeds from exercise of stock options and employee stock purchase plan	109	151
Taxes paid related to net share settlement of equity awards	(2,397)	(2,450)
Payments on finance lease obligations	(124)	(150)
Net cash used in financing activities	(2,412)	(2,449)
Net increase (decrease) in cash, cash equivalents and restricted cash	20,904	(106,432)
Cash, cash equivalents, and restricted cash at beginning of period	146,624	164,864
Cash, cash equivalents, and restricted cash at end of period	167,528	58,432
Supplemental non-cash investing and financing activities:
Assets acquired under finance lease	33	57
Assets acquired under operating lease	57	320
Acquisition of property and equipment	6,894	0
Supplemental disclosure of cash flow information:
Cash paid for interest	778	1,577
Income tax paid	483	1,100
PPP Loan
Adjustments to reconcile net loss to net cash used in operating activities:
Interest income (expense), net	(623)	0
Convertible notes
Adjustments to reconcile net loss to net cash used in operating activities:
Interest income (expense), net	$ (880)	$ 0