Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Revenue	$ 4,653	$ 5,306
Cost of revenue	2,772	1,859
Gross profit	1,881	3,447
Operating expenses:
Research and development	1,458	851
Selling and marketing	1,130	891
General and administrative	1,487	1,486
Total operating expenses	4,075	3,228
Operating income (loss)	(2,194)	219
Interest and other income (expense)	95	119
Income (loss) before income taxes and equity loss in investee	(2,099)	338
Provision for (benefit from) income taxes	(434)	106
Income (loss) before equity loss in investee	(1,665)	232
Equity loss in investee	(245)	0
Net income (loss)	$ (1,910)	$ 232
Net income (loss) per common share:
Basic	$ (0.11)	$ 0.01
Diluted	$ (0.11)	$ 0.01
Weighted-average common shares:
Basic	17,864	17,676
Diluted	17,864	18,178

Income loss before equity in net income loss of investee.

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Interest and other Income expense.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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