Consolidated Statements of Comprehensive Income/(Loss) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales	$ 35,665us-gaap_SalesRevenueNet	$ 31,898us-gaap_SalesRevenueNet
Cost of sales	24,484us-gaap_CostOfRevenue	22,183us-gaap_CostOfRevenue
Gross profit	11,181us-gaap_GrossProfit	9,715us-gaap_GrossProfit
Operating expenses:
Selling, general and administrative	8,968	8,334
Annuity accrual release (note 8)	(704)emri_AnnuityAccrualRelease
Engineering and product development	1,265us-gaap_ResearchAndDevelopmentExpense	1,132us-gaap_ResearchAndDevelopmentExpense
Total operating expenses	9,529us-gaap_OperatingExpenses	9,466us-gaap_OperatingExpenses
Income/(Loss) from operations	1,652us-gaap_OperatingIncomeLoss	249us-gaap_OperatingIncomeLoss
Other income/ (expense):
Interest income		92us-gaap_InvestmentIncomeNet
Interest expense	(396)us-gaap_InterestExpense	(534)us-gaap_InterestExpense
Other, net	5us-gaap_OtherNonoperatingIncomeExpense	(87)us-gaap_OtherNonoperatingIncomeExpense
Total other income/ (expense), net	(391)us-gaap_NonoperatingIncomeExpense	(529)us-gaap_NonoperatingIncomeExpense
Income / (Loss) before income taxes	1,261	(280)
Income tax expense	384us-gaap_IncomeTaxExpenseBenefit	112us-gaap_IncomeTaxExpenseBenefit
Net Income/(Loss)	877us-gaap_NetIncomeLoss	(392)us-gaap_NetIncomeLoss
Foreign currency translation adjustment	(1,057)	430
Comprehensive (loss) / income	$ (180)us-gaap_ComprehensiveIncomeNetOfTax	$ 38us-gaap_ComprehensiveIncomeNetOfTax
Weighted average shares outstanding Basic and diluted	10,740	10,703
Earnings / (Loss) per share:
Basic and diluted	$ 0.08us-gaap_EarningsPerShareBasicAndDiluted	$ (0.04)us-gaap_EarningsPerShareBasicAndDiluted

Annuity accrual release.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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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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Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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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 net result for the period of deducting operating expenses from operating revenues.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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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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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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