Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (21,062)	$ (26,375)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	1,893	685
Depreciation of property and equipment	157	70
Amortization of deferred financing costs and loan discount	0	137
Changes in fair value of convertible preferred stock warrants	0	15,140
Changes in operating assets and liabilities:
Accounts receivable	(1,041)	(963)
Inventory	(1,954)	181
Prepaid expenses and other current assets	1,421	(1,080)
Accounts payable	98	405
Accrued expenses	(252)	298
Net cash used in operating activities	(20,740)	(11,502)
Cash flows from investing activities:
Purchase of property and equipment	(342)	(480)
Net cash used in investing activities	(342)	(480)
Cash flows from financing activities:
Proceeds from the exercise of common stock options	74	2
Procceds from Employee Stock Purchase Plan	295	0
Net cash provided by financing activities	369	2
Effect of currency exchange on cash and cash equivalents	(13)	(4)
Net change in cash and cash equivalents	(20,726)	(11,984)
Cash and cash equivalents at beginning of period	142,072	59,112
Cash and cash equivalents at end of period	121,346	47,128
Supplemental Information:
Cash paid for interest	0	1,011
Cash paid for income taxes	$ 1	$ 1