Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 1,265	$ 1,969
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	139	63
Stock based compensation	93	90
Changes in operating assets and liabilities:
Accounts receivable	340	(170)
Inventories	12	(227)
Prepaid expenses and other current assets	194	158
Other assets	(2)	(32)
Accounts payable	(181)	(154)
Accrued liabilities	(14)	18
Accrued income taxes	(30)	329
Deferred income taxes	148
Deferred revenue	(111)	(23)
Net cash provided by operating activities	1,853	2,021
Cash flows from investing activities:
Property, plant and equipment	(138)	(239)
Intangibles	(35)	(30)
Net cash used in investing activities	(173)	(269)
Cash flows from financing activities:
Proceeds from exercise of stock options	34
Net cash provided by financing activities	34
Effect of exchange rate changes on cash and cash equivalents	75	(25)
Net increase in cash and cash equivalents	1,789	1,727
Cash and cash equivalents, beginning of period	6,009	4,430
Cash and cash equivalents, end of period	7,798	6,157
Supplemental disclosure of cash flow information:
Income taxes paid	$ 503	$ 206