CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net loss	$ (23,278)	$ (15,200)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	890	903
Provision for inventory obsolescence	240	109
Provision for product warranties	(2)	318
Loss on disposal of property and equipment	75	48
Stock based compensation	6,697	5,088
Provision for allowance for doubtful accounts	315	128
Changes in current assets and liabilities:
Trade receivables	1,918	(4,901)
Income tax receivables	97	12
Prepaid expenses and other assets	(523)	1,355
Inventories	(5,568)	(2,859)
Accounts payable	67	1,154
Accrued expenses and other liabilities	(1,208)	3,396
Net cash used in operating activities	(20,280)	(10,449)
Cash flows from investing activities
Purchases of property and equipment	(1,010)	(723)
Net cash used in investing activities	(1,010)	(723)
Cash flows from financing activities
Proceeds from stock option exercises	365	67
Repayment of finance lease liabilities	(148)	(238)
Contributions from non-controlling interests	0	195
Net cash provided by financing activities	217	24
Effect of exchange rates on cash	395	103
Net change in cash and cash equivalents	(20,678)	(11,045)
Cash and cash equivalents, beginning of year	30,870	41,915
Cash and cash equivalents, end of year	10,192	30,870
Cash paid for:
Interest expense	15	10
Income taxes	128	111
Non cash activities:
Right-of-use assets capitalized and operating lease liabilities recognized upon lease modification	769	0
Right-of-use assets capitalized and finance lease liabilities recognized upon execution of lease	103	0
Right-of-use assets and finance lease liabilities derecognized upon execution of lease modification	28	0
Transfer of right-of-use assets to property and equipment on exercise of purchase option	$ 0	$ 43