CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 20	$ (5)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	145	146
Stock-based compensation	5	26
Amortization of right-of-use assets	126	97
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	(60)	(167)
Inventories	(7)	110
Prepaid expenses and other assets	225	(15)
Accounts payable	127	(42)
Accrued liabilities	(50)	29
Accrued income taxes	9	25
Deferred taxes	1	39
Lease liabilities	(135)	(100)
Deferred revenue	0	(13)
Net cash provided by operating activities	234	130
Cash flows from investing activities:
Property, plant and equipment	(142)	0
Intangible assets	0	(48)
Net cash used in investing activities	(142)	(48)
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	33	(15)
Net increase in cash and cash equivalents	125	253
Cash, cash equivalents and restricted cash, beginning of period	6,125	5,844
Cash, cash equivalents and restricted cash, end of period	6,250	6,097
Reconciliation of cash, cash equivalents and restricted cash, end of period:
Cash and cash equivalents, end of period	6,245	6,092
Restricted cash, end of period	5	5
Cash, cash equivalents and restricted cash, end of period	6,250	6,097
Supplemental disclosure of cash flow information:
Income taxes paid (refunded), net	(67)	8
Interest paid	0	0
Supplemental non-cash investing and financing activities:
Lease liabilities arising from obtaining right-of-use assets	$ 50	$ 0