Unaudited 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	$ (8,156)	$ (9,343)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	581	3,156
Common stock issued for services	34
Provision For Doubtful Accounts		(11)
Provision for (reversal of) inventory reserve	(37)
Foreign exchange loss (gain)	161	(323)
Depreciation expense	50	56
Amortization expense	94	106
Non-cash operating lease expense	26	30
Changes in operating assets and liabilities:
Accounts receivable	57	34
Other receivables	(4)	(13)
Inventory, net	(64)	(118)
Prepaid expenses	(134)	(98)
Other current assets	(22)
Operating lease liability	(19)	(31)
Accounts payable	(7)	229
Accrued liabilities	(779)	(366)
Deferred revenue	(127)	2
Net cash used in operating activities	(8,346)	(6,690)
Cash flows from investing activities:
Purchase of property and equipment	(12)	(19)
Proceeds from sale of property and equipment	6
Internally developed software		(2)
Net cash used in investing activities	(6)	(21)
Cash flows from financing activities:
Proceeds from issuances of common stock	644	11,037
Share issuance costs	(24)	(1,523)
Proceeds from the exercise of warrants and stock options		1,320
Net cash provided by financing activities	620	10,834
Effect of foreign exchange rate changes on cash		(29)
Net (decrease) increase in cash	(7,732)	4,094
Cash at beginning of period	11,005	3,331
Cash at end of period	3,273	$ 7,425
Supplemental cash flow information:
Right-of-use assets obtained in exchange for new lease liabilities	$ 151