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CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Current Assets:    
Cash $ 91,658,453us-gaap_Cash $ 51,361,607us-gaap_Cash
Accounts receivable, net of allowance for doubtful accounts of $72,757 and $59,753, respectively 2,644,049us-gaap_AccountsReceivableNetCurrent 2,154,217us-gaap_AccountsReceivableNetCurrent
Inventory 959,188us-gaap_InventoryNet 1,182,113us-gaap_InventoryNet
Other current assets 1,445,995us-gaap_PrepaidExpenseAndOtherAssetsCurrent 1,537,407us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Total current assets 96,707,685us-gaap_AssetsCurrent 56,235,344us-gaap_AssetsCurrent
Fixed assets, net 56,412us-gaap_PropertyPlantAndEquipmentNet 63,293us-gaap_PropertyPlantAndEquipmentNet
Other Assets:    
Prepaid expense 1,334,139us-gaap_PrepaidExpenseNoncurrent 1,427,263us-gaap_PrepaidExpenseNoncurrent
Intangible assets 1,258,750us-gaap_IntangibleAssetsNetExcludingGoodwill 1,228,588us-gaap_IntangibleAssetsNetExcludingGoodwill
Security deposit 125,000us-gaap_DepositsAssetsNoncurrent 125,000us-gaap_DepositsAssetsNoncurrent
Total other assets 2,717,889us-gaap_AssetsNoncurrent 2,780,851us-gaap_AssetsNoncurrent
Total assets 99,481,986us-gaap_Assets 59,079,488us-gaap_Assets
Current Liabilities:    
Accounts payable 6,235,183us-gaap_AccountsPayableCurrent 6,327,129us-gaap_AccountsPayableCurrent
Other current liabilities 4,879,452us-gaap_OtherLiabilitiesCurrent 3,840,639us-gaap_OtherLiabilitiesCurrent
Deferred revenue   522,613us-gaap_DeferredRevenue
Total current liabilities 11,114,635us-gaap_LiabilitiesCurrent 10,690,381us-gaap_LiabilitiesCurrent
Long-Term Liabilities:    
Accrued Expense 651,567us-gaap_AccountsPayableAndAccruedLiabilitiesNoncurrent  
Total liabilities 11,766,202us-gaap_Liabilities 10,690,381us-gaap_Liabilities
Commitments and Contingencies      
Stockholders' Equity:    
Preferred stock - par value $0.001; 10,000,000 shares authorized; no shares issued and outstanding      
Common stock - par value $0.001; 250,000,000 shares authorized; 172,651,036 and 156,097,019 issued and outstanding, respectively 172,651us-gaap_CommonStockValue 156,097us-gaap_CommonStockValue
Additional paid in capital 243,187,225us-gaap_AdditionalPaidInCapitalCommonStock 182,982,846us-gaap_AdditionalPaidInCapitalCommonStock
Accumulated deficit (155,644,092)us-gaap_RetainedEarningsAccumulatedDeficit (134,749,836)us-gaap_RetainedEarningsAccumulatedDeficit
Total stockholders' equity 87,715,784us-gaap_StockholdersEquity 48,389,107us-gaap_StockholdersEquity
Total liabilities and stockholders' equity $ 99,481,986us-gaap_LiabilitiesAndStockholdersEquity $ 59,079,488us-gaap_LiabilitiesAndStockholdersEquity