Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 747,517	$ 568,087
Accounts receivable (see Note 3)	2,322,373us-gaap_AccountsReceivableNetCurrent	2,012,115us-gaap_AccountsReceivableNetCurrent
Income tax receivable		281,202us-gaap_IncomeTaxesReceivable
Inventories (see Note 4)	3,467,438us-gaap_InventoryNet	3,061,536us-gaap_InventoryNet
Prepaid expenses	123,511us-gaap_PrepaidExpenseCurrent	126,952us-gaap_PrepaidExpenseCurrent
Total current assets	6,660,839us-gaap_AssetsCurrent	6,049,892us-gaap_AssetsCurrent
Property, equipment and leaseholds, net (see Note 5)	4,764,900us-gaap_PropertyPlantAndEquipmentNet	5,831,123us-gaap_PropertyPlantAndEquipmentNet
Patents (see Note 6)	137,404us-gaap_FiniteLivedIntangibleAssetsNet	168,868us-gaap_FiniteLivedIntangibleAssetsNet
Long term deposits (see Note 7)	4,425us-gaap_DepositsAssetsNoncurrent	4,781us-gaap_DepositsAssetsNoncurrent
Deferred tax asset (see Note 10)	2,667,286us-gaap_DeferredTaxAssetsNetNoncurrent	2,700,506us-gaap_DeferredTaxAssetsNetNoncurrent
Total Assets	14,234,854us-gaap_Assets	14,755,170us-gaap_Assets
Liabilities
Accounts payable and accrued liabilities	815,141	570,476
Deferred revenue	44,593us-gaap_DeferredRevenueCurrent	13,550us-gaap_DeferredRevenueCurrent
Income taxes payable	140,842us-gaap_TaxesPayableCurrent
Short term line of credit (Note 8)	750,000us-gaap_LineOfCredit	1,400,000us-gaap_LineOfCredit
Current portion of long term debt (see Note 9)	358,214us-gaap_LongTermDebtCurrent	304,556us-gaap_LongTermDebtCurrent
Total current liabilities	2,108,790us-gaap_LiabilitiesCurrent	2,288,582us-gaap_LiabilitiesCurrent
Long term debt (see Note 9)	754,475us-gaap_LongTermDebt	993,274us-gaap_LongTermDebt
Total liabilities	2,863,265us-gaap_Liabilities	3,281,856us-gaap_Liabilities
Stockholders' Equity
Capital stock (see Note 13) Authorized 50,000,000 common shares with a par value of $0.001 each 1,000,000preferred shares with a par value of $0.01 each Issued and outstanding: 13,169,991 (2013: 13,169,991) common shares	13,170us-gaap_CommonStockValue	13,170us-gaap_CommonStockValue
Capital in excess of par value	16,227,121	16,135,953
Other comprehensive income	(267,552)	328,686
Accumulated Deficit	(4,601,150)	(5,004,495)
Total Stockholders' Equity	11,371,589us-gaap_StockholdersEquity	11,473,314us-gaap_StockholdersEquity
Total Liabilities and Stockholders' Equity	$ 14,234,854	$ 14,755,170

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant