Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Cash flows from operating activities:
Net loss	$ (1,041)	$ (3,896)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	399	500
Share-based compensation expense	415	347
Provision (reduction) for doubtful accounts	(60)	7
Deferred income taxes	0	19
Changes in operating assets and liabilities:
Accounts receivables	(2,215)	313
Inventories	(95)	156
Other assets	(4,483)	447
Accounts payable	(888)	(196)
Accrued liabilities	88	(491)
Deferred revenue	(669)	(793)
Other liabilities	4,984	(136)
Net cash used in operating activities	(3,565)	(3,723)
Cash flows from investing activities:
Purchases of property and equipment	(138)	(282)
Proceeds from sale of Tecnonet	0	4,789
(Increase) release of restricted time deposits	(12)	20
Net cash provided by (used in) investing activities	(150)	4,527
Cash flows from financing activities:
Proceeds from exercise of stock options	3	0
Purchase of treasury shares	0	(51)	$ (2,700)
Net cash provided by (used in) financing activities	3	(51)
Effect of exchange rate changes on cash and cash equivalents	4	6
Net increase (decrease) in cash and cash equivalents	(3,708)	759
Cash and cash equivalents, beginning of period	25,116	26,169	26,169
Cash and cash equivalents, end of period			25,116
Cash and cash equivalents, end of period	21,408	26,928	$ 25,116
Supplemental disclosure of cash flow information:
Cash paid during period for interest	0	0
Cash paid during period for income taxes	$ 28	$ 60