CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (15,522)	$ (10,906)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	246	404
Amortization intangible assets	166	133
Amortization of right-of-use lease assets	269	232
Stock-based compensation	1,394	494
Amortization of debt issuance costs	124	218
Change in fair value of contingent earnout		14
Changes in operating assets and liabilities:
Accounts receivable, net	(186)
Inventory	(1,984)	(872)
Prepaid expenses and other assets	(416)
Accounts payable	(826)	(168)
Accrued expenses and other liabilities	(423)	(1,529)
Deferred revenue	(24)	21
Accrued compensation	(863)	(1,108)
Net cash used in operating activities	(18,045)	(13,067)
Cash flows from investing activities:
Purchases of property and equipment	(56)	(74)
Net cash used in investing activities	(56)	(74)
Financing activities:
Payment of common stock issuance costs	(598)
Proceeds from exercise of common stock options	242	33
Payment of contingent earnout	(117)	(667)
Principal repayments on finance lease	(13)	(11)
Net cash used in financing activities	(486)	(645)
Net decrease in cash and cash equivalents	(18,587)	(13,786)
Cash and cash equivalents at beginning of period	84,641	51,722
Cash and cash equivalents at end of period	66,054	37,936
Cash paid for:
Interest	$ 848	850
Supplemental schedule of non-cash investing and financing activities:
Operating lease right-of-use assets obtained in exchange for lease liabilities		$ 168