CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (48,499)	$ (46,665)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,426	2,079
Amortization intangible assets	586	531
Amortization of right-of-use lease assets	985	957
Stock-based compensation	2,372	1,644
Change in fair value of warrant liabilities	(71)	(346)
Amortization of debt issuance costs	778	807
Loss on disposal of assets	2	57
Change in fair value of forward obligation	(52)	250
Change in fair value of contingent earnout	261	(473)
Changes in operating assets and liabilities:
Accounts receivable, net	(582)	707
Inventory	(3,812)	2,379
Prepaid expenses and other assets	(2,646)	156
Accounts payable	1,128	(369)
Accrued expenses and other liabilities	(71)	(1,850)
Deferred revenue	(72)	222
Accrued compensation	(338)	1,370
Net cash used in operating activities	(48,605)	(38,544)
Cash flows from investing activities:
Purchases of property and equipment	(638)	(916)
Acquisition of intangible assets	(1,335)
Net cash used in investing activities	(1,973)	(916)
Financing activities:
Proceeds from the issuance of common stock, net of issuance costs	84,390
Proceeds from exercise of common stock options	271	44
Payment of contingent consideration	(667)	(987)
Borrowing on Small Business Administration loan		5,138
Repayment on Small Business Administration loan		(5,138)
Principal repayments on finance lease	(47)	(40)
Payments of debt issuance costs	(450)
Net cash provided by (used in) financing activities	83,497	(983)
Net increase (decrease) in cash and cash equivalents	32,919	(40,443)
Cash and cash equivalents at beginning of year	51,722	92,165
Cash and cash equivalents at end of year	84,641	51,722
Cash paid for:
Taxes	2
Interest	3,445	3,446
Supplemental schedule of non-cash investing and financing activities:
Operating lease right-of-use assets obtained in exchange for lease liabilities	424	$ 3,082
Conversion of convertible preferred stock into common stock on initial public offering	281,342
Settlement of outstanding forward obligation into common stock on initial public offering	2,698
Reclassification of convertible preferred stock warrant into common stock warrant on initial public offering	$ 3,978