CONSOLIDATED STATEMENTS OF OPERATIONS (in thousands, except per share amounts) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net Sales	$ 21,924us-gaap_SalesRevenueGoodsNet	$ 18,717us-gaap_SalesRevenueGoodsNet
Cost of goods sold	10,099us-gaap_CostOfGoodsAndServicesSold	9,207us-gaap_CostOfGoodsAndServicesSold
Gross margin	11,825us-gaap_GrossProfit	9,510us-gaap_GrossProfit
Operating expenses:
Research and development	4,708us-gaap_ResearchAndDevelopmentExpense	4,586us-gaap_ResearchAndDevelopmentExpense
Selling, general and administrative	5,997	6,378
Impairment charge	0us-gaap_AssetImpairmentCharges	31us-gaap_AssetImpairmentCharges
Provision for business restructuring	13us-gaap_RestructuringCharges	1,183us-gaap_RestructuringCharges
Total operating expenses	10,718us-gaap_OperatingExpenses	12,178us-gaap_OperatingExpenses
Operating income(loss)	1,107us-gaap_OperatingIncomeLoss	(2,668)us-gaap_OperatingIncomeLoss
Non-operating income (expense):
Interest income	159	160
Foreign currency transaction gain (loss)	(160)	(76)
Total non-operating income (expense)	(1)us-gaap_NonoperatingIncomeExpense	84us-gaap_NonoperatingIncomeExpense
Income (loss) before income taxes	1,106	(2,584)
Income tax (expense) benefit	(7)us-gaap_IncomeTaxExpenseBenefit	8us-gaap_IncomeTaxExpenseBenefit
Net income (loss)	$ 1,099us-gaap_NetIncomeLoss	$ (2,576)us-gaap_NetIncomeLoss
Basic earnings (loss) per share	$ 0.14us-gaap_EarningsPerShareBasic	$ (0.33)us-gaap_EarningsPerShareBasic
Diluted earnings (loss) per share	$ 0.14us-gaap_EarningsPerShareDiluted	$ (0.33)us-gaap_EarningsPerShareDiluted
Weighted-average basic shares	7,826	7,767
Weighted-average diluted shares	7,948	7,767

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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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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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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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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