CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net loss	$ (19,925)	$ (78,119)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	4,788	4,186
Credit losses on accounts receivable	311	102
Foreign currency losses	359	167
Unrealized losses on marketable securities	(241)
Amortization of (discount) premium on marketable securities	(1,249)
Operating lease right-of-use asset amortization	1,518	1,099
Stock-based compensation expense	12,438	11,779
Impairment		16,915
Deferred income taxes	242	(134)
Loss on disposal of fixed assets	46	6
Changes in assets and liabilities:
Accounts receivable	(5,615)	5,045
Inventory	(2,966)	3,919
Prepaid expenses and other current assets	(2,829)	(262)
Other non-current assets	(716)	(859)
Accounts payable	948	(7,085)
Accrued compensation and benefits, accrued expenses, and other current liabilities	876	(3,021)
Deferred revenue	894	3,108
Operating lease liabilities	(1,690)	(1,156)
Other non-current liabilities	(107)	128
Net cash used in operating activities	(12,918)	(44,182)
Cash flows from investing activities:
Purchases of marketable securities	(125,200)
Purchases of property and equipment	(1,572)	(10,131)
Proceeds from RADx grant on assets purchased		520
Net cash used in investing activities	(126,772)	(9,611)
Cash flows from financing activities:
Proceeds from common stock issued under stock plans	2,632	1,597
Payments for employee taxes withheld on stock-based compensation awards	(142)
Net cash provided by financing activities	2,490	1,597
Net decrease in cash, cash equivalents, and restricted cash	(137,200)	(52,196)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(229)	(507)
Cash, cash equivalents, and restricted cash at beginning of period	341,337	399,042
Cash, cash equivalents, and restricted cash at end of period	203,908	346,339
Supplemental disclosure of cash flow information:
Cash paid for taxes	719	263
Operating lease right-of-use assets obtained in exchange for lease liabilities		$ 22,239
Shares received as consideration under product sales agreement (Note 3, 6)	$ 775