Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 576	$ 1,265
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	108	139
Stock based compensation	76	93
Changes in operating assets and liabilities:
Accounts receivable	539	340
Inventories	271	12
Prepaid expenses and other current assets	134	194
Other assets		(2)
Accounts payable	5	(181)
Accrued liabilities	(14)	(14)
Accrued income taxes	(43)	(30)
Deferred income taxes	123	148
Deferred revenue		(111)
Net cash provided by operating activities	1,775	1,853
Cash flows from investing activities:
Property, plant and equipment	(170)	(138)
Share repurchase	(2,764)
Intangibles	(72)	(35)
Net cash used in investing activities	(3,006)	(173)
Cash flows from financing activities:
Proceeds from exercise of stock options	6	34
Net cash provided by financing activities	6	34
Effect of exchange rate changes on cash and cash equivalents	(111)	75
Net increase (decrease) in cash and cash equivalents	(1,336)	1,789
Cash, cash equivalents and restricted cash, beginning of period	7,777	6,014
Cash, cash equivalents and restricted cash, end of period	6,441	7,803
Supplemental disclosure of cash flow information:
Income taxes paid	$ 227	$ 503