CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net loss	$ (10,457)	$ (17,424)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,767	1,681
Amortization of intangible assets	824	872
Non-cash operating lease cost	400	391
Provision for expected credit losses	(4)
Write-down of inventory	66	173
Loss on disposal of property and equipment		11
Stock-based compensation expense	4,723	4,916
Change in fair value of warrant liabilities	1,654
Changes in operating assets and liabilities:
Accounts receivable	2,212	1,065
Notes receivable	(769)	346
Prepaid and other current assets	(1,069)	398
Inventories	(7,940)	(3,105)
Accounts payable	(1,489)	783
Accrued liabilities	626	362
Other	277	(567)
Net cash used in operating activities	(9,179)	(10,098)
Cash flows from investing activities
Purchase of property and equipment	(191)	(58)
Net cash used in investing activities	(191)	(58)
Cash flows from financing activities
Proceeds from issuance of redeemable convertible preferred stock, net of offering costs	13,882
Proceeds from issuance of warrants	5,605
Proceeds from issuance of common stock under employee stock purchase plan	181	212
Net settlement of stock-based compensation awards	(52)
Payment of contingent consideration		(2,400)
Net cash provided by (used in) financing activities	19,616	(2,188)
Net increase (decrease) in cash and cash equivalents	10,246	(12,344)
Cash and cash equivalents at beginning of the period	14,674	31,637
Cash and cash equivalents at end of the period	24,920	19,293
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	2,879	1,496
Transfer from (to) Inventories to (from) Property and equipment, net	(746)	34
Accounts payable for purchases of Property and equipment, net	(2)	$ (31)
Accrued offering costs	$ (135)