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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES    
Net loss $ (20,929,365) $ (20,894,256)
Adjustments to reconcile net loss to net cash flows used in operating activities:    
Depreciation of fixed assets 8,363 6,881
Amortization of intangible assets 11,234 6,691
Provision for doubtful accounts 236,151 13,004
Share-based compensation 4,381,690 840,464
Changes in operating assets and liabilities:    
Accounts receivable (2,250,209) (502,836)
Inventory (267,281) 222,925
Other current assets 477,312 91,412
Other assets (2,536) (9,842)
Accounts payable 304,475 (91,946)
Deferred revenue   (522,613)
Other current liabilities (1,373,762) 1,038,813
Other long-term liabilities   651,567
Net cash flows used in operating activities (19,403,928) (19,149,736)
CASH FLOWS FROM INVESTING ACTIVITIES    
Patent costs (90,529) (36,853)
Purchase of fixed assets (74,478)  
Net cash flows used in investing activities (165,007) (36,853)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from sale of common stock, net of costs 134,863,475 59,117,827
Proceeds from exercise of options 786,450 7,208
Proceeds from exercise of warrants 1,310,000 358,400
Net cash flows provided by financing activities 136,959,925 59,483,435
Increase (decrease) in cash 117,390,990 40,296,846
Cash, beginning of period 64,706,355 51,361,607
Cash, end of period $ 182,097,345 $ 91,658,453