Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 2,893	$ 1,731
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Increase in reserves for excess and obsolete inventories	21
Depreciation and amortization	65	56
Increase (decrease) in allowance for doubtful accounts	(10)	10
Stock based compensation	119	89
Changes in operating assets and liabilities:
Accounts receivable	(117)	229
Inventories	(274)	41
Prepaid expenses and other current assets	(79)	(12)
Other assets	(31)	13
Accounts payable	(160)	11
Accrued liabilities	30	4
Accrued income taxes	104
Deferred income taxes	(675)
Deferred revenue		(34)
Net cash provided by operating activities -- continuing operations	1,886	2,138
Cash flows from investing activities:
Property, plant and equipment	(191)	(68)
Costs of intangibles	(39)
Net cash used in investing activities	(230)	(68)
Effect of exchange rate changes on cash and cash equivalents	(77)	(21)
Net increase in cash and cash equivalents	1,579	2,049
Cash and cash equivalents, beginning of year	4,430	2,381
Cash and cash equivalents, end of year	6,009	4,430
Supplemental disclosure of cash flow information:
Income taxes paid	$ 587	$ (4)