CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 243	$ 60
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	214	216
Stock-based compensation	20	26
Operating leases - other	(13)	11
Gain on forgiveness of PPP loan	(186)	0
Loss on disposal of property and equipment	14	0
Changes in operating assets and liabilities:
Accounts receivable	7	(194)
Inventories	64	(36)
Prepaid expenses and other assets	62	(169)
Accounts payable	(12)	14
Accrued liabilities	100	68
Accrued income taxes	132	105
Deferred taxes	(6)	(46)
Deferred revenue	0	(13)
Net cash provided by operating activities	639	42
Cash flows from investing activities:
Property, plant and equipment	(142)	0
Intangible assets	0	(66)
Net cash used in investing activities	(142)	(66)
Cash flows from financing activities:
Proceeds from PPP loan	0	186
Net cash provided by financing activities	0	186
Effect of exchange rate changes on cash, cash equivalents and restricted cash	25	49
Net increase in cash and cash equivalents	522	211
Cash, cash equivalents and restricted cash, beginning of period	6,125	5,844
Cash, cash equivalents and restricted cash, end of period	6,647	6,055
Reconciliation of cash, cash equivalents and restricted cash, end of period:
Cash and cash equivalents, end of period	6,642	6,050
Restricted cash, end of period	5	5
Cash, cash equivalents and restricted cash, end of period	6,647	6,055
Supplemental disclosure of cash flow information:
Income taxes paid (refunded), net	(14)	30
Interest paid	0	0
Supplemental disclosure of non-cash investing and financing activities:
Lease liabilities arising from obtaining right-of-use assets	$ 50	$ 313