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Organization and Summary of Significant Accounting Policies (Details Textual 1) (USD $)
0 Months Ended 12 Months Ended
Feb. 01, 2013
Dec. 31, 2014
Dec. 31, 2013
Organization and summary of significant accounting policies (Textual) [Abstract]      
Significant financial instruments with off-balance sheet risk   $ 0us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountAsset  
Long-term debt   0us-gaap_LongTermDebtNoncurrent 0us-gaap_LongTermDebtNoncurrent
Sale of property, amount 9,500,000us-gaap_PropertyPlantAndEquipmentDisposals    
Net proceeds received from sale of property   0us-gaap_ProceedsFromSaleOfPropertyHeldForSale 8,922,600us-gaap_ProceedsFromSaleOfPropertyHeldForSale
Interest and penalties recognized in statement of operations   0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense  
Accrued interest or penalties related to uncertain tax positions   0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Reserve for reduction in account receivables   795,300slgd_ReserveForReductionInAccountReceivable 821,700slgd_ReserveForReductionInAccountReceivable
Trade Promotion to Customer   $ 2,056,300us-gaap_SalesAllowancesGoods $ 2,036,800us-gaap_SalesAllowancesGoods
Minimum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   3 years  
Maximum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   20 years  
Production Equipment | Minimum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   15 years  
Production Equipment | Maximum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   20 years  
Production Support Equipment | Minimum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   3 years  
Production Support Equipment | Maximum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   10 years  
Office Furniture and Equipment | Minimum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   10 years  
Office Furniture and Equipment | Maximum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   20 years  
Office Equipment | Minimum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   3 years  
Office Equipment | Maximum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   5 years  
Carpet, Drapes and Company Vehicles | Minimum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   5 years  
Carpet, Drapes and Company Vehicles | Maximum      
Organization and summary of significant accounting policies (Textual) [Abstract]      
Useful life of property, plant and equipment   10 years