CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities
Net loss	$ (13,025)	$ (13,433)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,158	1,110
Amortization of intangible assets	551	596
Non-cash operating lease cost	267	260
Provision for expected credit losses	(2)	125
Stock-based compensation expense	3,550	3,244
Change in fair value of warrant liabilities	5,997
Changes in operating assets and liabilities:
Accounts receivable	2,844	1,871
Notes receivable	(1,199)	149
Prepaid and other current assets	(666)	470
Inventories	(7,265)	(818)
Accounts payable	(804)	1,497
Accrued liabilities	(668)	(232)
Other	422	(236)
Net cash used in operating activities	(8,840)	(5,397)
Cash flows from investing activities
Purchase of property and equipment	(189)	(56)
Net cash used in investing activities	(189)	(56)
Cash flows from financing activities
Proceeds from issuance of redeemable convertible preferred stock, net of offering costs	14,035
Proceeds from issuance of warrants	5,605
Proceeds from issuance of common stock under employee stock purchase plan	181	212
Payment of contingent consideration		(1,200)
Net cash provided by (used in) financing activities	19,821	(988)
Net increase (decrease) in cash and cash equivalents	10,792	(6,441)
Cash and cash equivalents at beginning of the period	14,674	31,637
Cash and cash equivalents at end of the period	25,466	25,196
Supplemental cash flow information
Cash paid for taxes	18	10
Supplemental schedule of non-cash investing and financing activities
Transfer from Inventories to Equipment under lease, net	1,281	1,416
Transfer from (to) Inventories to (from) Property and equipment, net	(428)	$ 34
Accrued offering costs	$ (289)