CONSOLIDATED STATEMENT OF CASH FLOWS (in thousands) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (3,964)	$ (1,187)
Adjustments to reconcile income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	815	867
Gain on sale of assets	0	(64)
Equipment transferred to cost of goods sold	245	63
Share-based compensation	1,467	1,171
Impairment and related charges	943	0
Net change in:
Trade accounts receivable	1,664	(375)
Inventories	(414)	139
Other current assets	(398)	(307)
Accounts payable and accrued liabilities	(38)	(2,031)
Deferred revenue	(380)	(98)
Other long-term liabilities	(491)	(29)
Deposits and other long-term assets	1,182	(245)
Net cash provided by (used in) operating activities	631	(2,096)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(860)	(612)
Net proceeds from sale of assets	0	64
Cash provided by (used in) investing activities	(860)	(548)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from issuance of common stock, less payments for shares withheld to cover tax	(144)	(213)
Repurchase of common stock	0	(1,464)
Cash provided by (used in) financing activities	(144)	(1,677)
Increase (decrease) in cash and cash equivalents	(373)	(4,321)
Effects of exchange rate changes on cash	604	(86)
Cash and cash equivalents at beginning of period	13,936	18,343
Cash and cash equivalents at end of period	14,167	13,936
Supplemental disclosure of non-cash financing activities:
Cash paid during the period for: Income taxes	$ 137	$ 307