Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Revenue
Products sales and leasing	$ 3,268,737smid_ProductsSalesAndLeasing	$ 4,070,338smid_ProductsSalesAndLeasing
Shipping and installation revenue	599,253smid_ShippingAndInstallationRevenue	1,114,904smid_ShippingAndInstallationRevenue
Royalties	332,135us-gaap_LicensesRevenue	452,166us-gaap_LicensesRevenue
Total revenue	4,200,125us-gaap_SalesRevenueNet	5,637,408us-gaap_SalesRevenueNet
Cost of goods sold	3,670,133us-gaap_CostOfGoodsAndServicesSold	4,907,402us-gaap_CostOfGoodsAndServicesSold
Gross profit	529,992us-gaap_GrossProfit	730,006us-gaap_GrossProfit
Operating expenses
General and administrative expenses	874,707us-gaap_GeneralAndAdministrativeExpense	769,071us-gaap_GeneralAndAdministrativeExpense
Selling expenses	504,014us-gaap_SellingAndMarketingExpense	539,480us-gaap_SellingAndMarketingExpense
Total operating expenses	1,378,721us-gaap_OperatingExpenses	1,308,551us-gaap_OperatingExpenses
Gain on sale of assets	5,254	11,977
Other income	10,607us-gaap_OtherIncome	30,077us-gaap_OtherIncome
Operating income (loss)	(832,868)us-gaap_OperatingIncomeLoss	(536,491)us-gaap_OperatingIncomeLoss
Interest income (expense)
Interest expense	(26,993)us-gaap_InterestExpense	(28,757)us-gaap_InterestExpense
Interest income	492us-gaap_InterestIncomeDomesticDeposits	5,712us-gaap_InterestIncomeDomesticDeposits
Total other expense	(26,501)smid_TotalOtherExpense	(23,045)smid_TotalOtherExpense
Loss before income tax benefit	(859,369)	(559,536)
Income tax expense (benefit)	(335,000)us-gaap_IncomeTaxExpenseBenefit	(231,000)us-gaap_IncomeTaxExpenseBenefit
Net income (loss)	$ (524,369)us-gaap_NetIncomeLoss	$ (328,536)us-gaap_NetIncomeLoss
Basic earnings (loss) per share (in dollars per share)	$ (0.11)us-gaap_EarningsPerShareBasic	$ (0.07)us-gaap_EarningsPerShareBasic
Diluted earnings (loss) per share (in dollars per share)	$ (0.11)us-gaap_EarningsPerShareDiluted	$ (0.07)us-gaap_EarningsPerShareDiluted
Weighted average number of common shares outstanding:
Basic	4,891,815	4,881,548
Diluted	4,891,815	4,881,548

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