Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 118	$ 364
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	86	40
Stock based compensation	30	29
Changes in operating assets and liabilities:
Accounts receivable	(22)	90
Inventories	127	(83)
Prepaid expenses and other current assets	60	56
Other assets	(1)	(2)
Accounts payable	108	(85)
Accrued liabilities	(43)	(21)
Accrued income taxes	(46)	37
Deferred income taxes	68	45
Deferred revenue		(82)
Net cash provided by operating activities	485	388
Cash flows from investing activities:
Property, plant and equipment	(195)	(16)
Repurchase stock	(162)
Intangibles	(20)	(19)
Net cash used in investing activities	(377)	(35)
Effect of exchange rate changes on cash and cash equivalents	85	11
Net increase in cash and cash equivalents	193	364
Cash, cash equivalents and restricted cash, beginning of period	7,777	6,014
Cash, cash equivalents and restricted cash, end of period	7,970	6,378
Supplemental disclosure of cash flow information:
Income taxes paid	$ 34	$ 105