CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net loss	$ (11,418)	$ (8,956)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	472	440
Provision for inventory obsolescence	139	13
Loss on disposal of property and equipment	47	0
Stock based compensation	3,364	2,563
Provision for allowance for doubtful accounts	284	46
Changes in operating assets and liabilities:
Trade receivables	2,236	(656)
Prepaid expenses and other assets	(549)	(1,160)
Inventories	(3,187)	(1,198)
Accounts payable	33	1,296
Accrued and other liabilities	(1,811)	554
Net cash used in operating activities	(10,390)	(7,058)
Cash flows from investing activities
Purchases of property and equipment	(680)	(221)
Net cash used in investing activities	(680)	(221)
Cash flows from financing activities
Proceeds from stock option exercises	208	21
Repayment of finance lease liabilities	(108)	(120)
Contributions from non-controlling interests	0	195
Net cash provided by financing activities	100	96
Effect of exchange rates on cash	163	(62)
Net change in cash and cash equivalents	(10,807)	(7,245)
Cash and cash equivalents, beginning of period	30,870	41,915
Cash and cash equivalents, end of period	20,063	34,670
Cash paid for:
Interest	11	4
Income taxes	8	13
Non cash activities:
Right-of-use assets capitalized and operating lease liabilities recognized upon lease modification	600	0
Right-of-use assets capitalized and finance lease liabilities recognized upon execution of lease	$ 103	$ 0