CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 95	$ (1,820)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	158	140
Equipment transferred to cost of goods sold	97	125
Share-based compensation	249	291
Net change in:
Trade accounts receivable	56	913
Inventories	(225)	(277)
Other current assets	(39)	(98)
Accounts payable and accrued liabilities	(46)	(835)
Deferred revenue	141	28
Other long-term liabilities	(88)	(253)
Deposits and other long-term assets	65	204
Net cash provided by (used in) operating activities	463	(1,582)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(183)	(272)
Cash provided by (used in) investing activities	(183)	(272)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from issuance of common stock, less payments for shares withheld to cover tax	7	6
Cash provided by (used in) financing activities	7	6
Increase (decrease) in cash and cash equivalents	287	(1,848)
Effects of exchange rate changes on cash	71	(46)
Cash and cash equivalents at beginning of period	11,510	14,190
Cash and cash equivalents at end of period	11,868	12,296
Cash paid during the period for:
Income taxes	$ 24	$ 441