CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (362)	$ (1,611)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	350	446
Equipment transferred to cost of goods sold	131	52
Share-based compensation	680	730
Net change in:
Trade accounts receivable	(2,031)	1,262
Inventories	(20)	273
Other current assets	139	1,076
Accounts payable and accrued liabilities	626	(541)
Deferred revenue	273	(77)
Other long-term liabilities	(222)	(264)
Deposits and other long-term assets	280	912
Net cash provided by (used in) operating activities	(156)	106
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(235)	(432)
Cash provided by (used in) investing activities	(235)	(432)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from issuance of common stock, less payments for shares withheld to cover tax	(431)	(159)
Cash provided by (used in) financing activities	(431)	(159)
Increase (decrease) in cash and cash equivalents	(822)	(485)
Effects of exchange rate changes on cash	(332)	(178)
Cash and cash equivalents at beginning of period	14,167	13,936
Cash and cash equivalents at end of period	13,013	13,273
Supplemental disclosure of cash flow information:
Income taxes	$ 78	$ 69