Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities
Net loss	$ (14,357,325)	$ (8,508,592)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	84,373	41,850
Amortization of debt issuance costs	75,818	13,848
Amortization of bond premium	$ 102,618	137,897
Re-measurement of fair value of stock warrants liability		7,263
Stock based compensation	$ 1,046,086	722,358
Increase (decrease) in cash arising from changes in assets and liabilities:
Related party receivable	(9,375)	(18,446)
Prepaid expenses, and other current assets, and restricted cash	(157,440)	318,275
Deposits	(50,000)	(10,478)
Accounts payable	(385,161)	28,561
Accrued expenses and other payables	1,260,355	$ (56,888)
Other long term liabilities	$ 12,228
Accrued interest		$ (25,364)
Net Cash Used in Operating Activities	$ (12,377,823)	(7,349,716)
Cash Flows from Investing Activities
Proceeds from maturities of short term investments	14,943,468	13,827,773
Purchases of short term investments	(11,090,091)	(8,783,623)
Purchases of property and equipment	(106,838)	(452,444)
Net Cash Provided by Investing Activities	3,746,539	$ 4,591,706
Cash Flows from Financing Activities
Proceeds from March 2015 public offering, net of underwriting discounts	$ 11,400,870
Proceeds from the exercise of stock options		$ 37,719
Proceeds from issuance of long term debt	$ 2,242,575	$ 1,435,283
Payments on long term debt	(145,161)
Stock issuance costs	(302,461)
Net Cash Provided by Financing Activities	13,195,823	$ 1,473,002
Effect of exchange rate changes on cash and cash equivalents	(67,905)
Net Increase in Cash and Cash Equivalents	4,496,634	$ (1,285,008)
Cash and Cash Equivalents - Beginning of Period	3,714,304	4,566,992
Cash and Cash Equivalents - End of Period	8,210,938	3,281,984
Supplemental Disclosure for Cash Flow Information
Interest paid	$ 257,339	8,138
Cashless exercise of stock warrants		$ 452,874