Quarterly report pursuant to Section 13 or 15(d)

Balance Sheets

v2.4.1.9
Balance Sheets (USD $)
Mar. 31, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 4,202,035us-gaap_CashAndCashEquivalentsAtCarryingValue $ 3,539,911us-gaap_CashAndCashEquivalentsAtCarryingValue
Short-term investments (Note 1) 17,901,600us-gaap_ShortTermInvestments 20,998,789us-gaap_ShortTermInvestments
Prepaid expenses and other current assets (Note 1) 260,316us-gaap_PrepaidExpenseAndOtherAssetsCurrent 357,083us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Total current assets 22,363,951us-gaap_AssetsCurrent 24,895,783us-gaap_AssetsCurrent
Property and equipment, net (Note 2) 2,064,006us-gaap_PropertyPlantAndEquipmentNet 2,103,880us-gaap_PropertyPlantAndEquipmentNet
Other long term assets, net (Notes 1 and 3) 1,714,722us-gaap_OtherAssetsNoncurrent 1,724,190us-gaap_OtherAssetsNoncurrent
Total assets 26,142,679us-gaap_Assets 28,723,853us-gaap_Assets
Current liabilities:    
Accounts payable 402,812us-gaap_AccountsPayableCurrent 437,519us-gaap_AccountsPayableCurrent
Accrued compensation 43,555us-gaap_EmployeeRelatedLiabilitiesCurrent 609,417us-gaap_EmployeeRelatedLiabilitiesCurrent
Accrued expenses 255,656us-gaap_AccruedLiabilitiesCurrent 325,400us-gaap_AccruedLiabilitiesCurrent
Notes and other obligations, current portion (Note 4) 218,401us-gaap_NotesPayableCurrent 312,934us-gaap_NotesPayableCurrent
Deferred revenue, current portion (Note 7) 96,698us-gaap_DeferredRevenueCurrent 96,698us-gaap_DeferredRevenueCurrent
Total current liabilities 1,017,122us-gaap_LiabilitiesCurrent 1,781,968us-gaap_LiabilitiesCurrent
Notes and other obligations, less current portion (Note 4) 1,958,867us-gaap_LongTermNotesPayable 1,998,049us-gaap_LongTermNotesPayable
Deferred revenue, less current portion (Note 7) 1,234,538us-gaap_DeferredRevenueNoncurrent 1,258,713us-gaap_DeferredRevenueNoncurrent
Total liabilities 4,210,527us-gaap_Liabilities 5,038,730us-gaap_Liabilities
Commitments and contingencies (Notes 7 and 9)      
Stockholders' equity (Notes 5 and 6):    
Common stock, no par value, 60,000,000 shares authorized; 30,990,029 shares issued and outstanding 120,943,399us-gaap_CommonStocksIncludingAdditionalPaidInCapital 120,509,997us-gaap_CommonStocksIncludingAdditionalPaidInCapital
Accumulated deficit (99,011,247)us-gaap_RetainedEarningsAccumulatedDeficit (96,824,874)us-gaap_RetainedEarningsAccumulatedDeficit
Total stockholders' equity 21,932,152us-gaap_StockholdersEquity 23,685,123us-gaap_StockholdersEquity
Total liabilities and stockholders' equity $ 26,142,679us-gaap_LiabilitiesAndStockholdersEquity $ 28,723,853us-gaap_LiabilitiesAndStockholdersEquity