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Balance Sheets (USD $)
Dec. 31, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 542,215us-gaap_CashAndCashEquivalentsAtCarryingValue $ 99,716us-gaap_CashAndCashEquivalentsAtCarryingValue
Investments in available-for-sale securities 1,932,801us-gaap_AvailableForSaleSecuritiesCurrent 2,526,542us-gaap_AvailableForSaleSecuritiesCurrent
Other current assets 29,245us-gaap_OtherAssetsCurrent 32,054us-gaap_OtherAssetsCurrent
Total current assets 2,504,261us-gaap_AssetsCurrent 2,658,312us-gaap_AssetsCurrent
Total Assets 2,504,261us-gaap_Assets 2,658,312us-gaap_Assets
Current liabilities:    
Accounts payable 18,000us-gaap_AccountsPayableCurrent 18,001us-gaap_AccountsPayableCurrent
Conversion feature liability 70,786us-gaap_DerivativeLiabilitiesCurrent 76,236us-gaap_DerivativeLiabilitiesCurrent
Total current liabilities 88,786us-gaap_LiabilitiesCurrent 94,237us-gaap_LiabilitiesCurrent
Commitments and contingencies      
Redeemable convertible preferred stock, $0.01 par value, 1,000,000 shares authorized; 168 shares issued and outstanding ($168,496 aggregate liquidation value) 168,496us-gaap_TemporaryEquityCarryingAmountAttributableToParent 168,496us-gaap_TemporaryEquityCarryingAmountAttributableToParent
Stockholders’ equity:    
Common stock, $0.01 par value, 100,000,000 shares authorized; 8,949,645 and 8,650,417 shares issued and outstanding at December 31, 2014 and 2013, respectively 89,496us-gaap_CommonStockValue 86,504us-gaap_CommonStockValue
Common stock to be issued 12,500issm_CommonStockValueToBeIssued 12,500issm_CommonStockValueToBeIssued
Additional paid-in capital 64,467,510us-gaap_AdditionalPaidInCapital 64,405,084us-gaap_AdditionalPaidInCapital
Accumulated deficit (62,330,316)us-gaap_RetainedEarningsAccumulatedDeficit (62,094,561)us-gaap_RetainedEarningsAccumulatedDeficit
Accumulated other comprehensive income (loss) 7,789us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax (13,948)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Total stockholders’ equity 2,246,979us-gaap_StockholdersEquity 2,395,579us-gaap_StockholdersEquity
Total liabilities and stockholders’ equity $ 2,504,261us-gaap_LiabilitiesAndStockholdersEquity $ 2,658,312us-gaap_LiabilitiesAndStockholdersEquity