Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows used in operating activities
Net loss for the period	$ (17,209,000)	$ (2,758,000)
Adjustments to reconcile net loss to net cash used by operating activities:
Stock-based compensation	1,153,000	525,000
Accretion of debt discount	123,000	208,000
Depreciation of property and equipment	37,000	42,000
Amortization of promissory note issuance costs	38,000	61,000
Amortization of discount on securities available-for-sale	30,000
Change in fair value warrant liability	(49,000)
Foreign exchange transaction loss	11,000	388,000
Other	3,000
Changes in operating assets and liabilities:
Other receivables	33,000	35,000
Prepaid expenses	550,000	198,000
Accounts payable	2,196,000	555,000
Accrued expenses	(330,000)	(1,394,000)
Net cash used in operating activities	(13,414,000)	(2,140,000)
Cash flows provided by (used in) investing activities
Purchases of property and equipment	(3,000)	(3,000)
Maturities of securities available-for-sale	30,401,000
Purchases of securities available-for-sale	(11,496,000)
Net cash provided by (used in) investing activities	18,902,000	(3,000)
Cash flows provided by (used in) financing activities
Issuance of common shares from private placement, net of issuance cost	1,984,000
Payment of issuance costs in connection with public offering	(53,000)
Cash received from the issuance of promissory notes	2,362,000
Principal payments on promissory notes	(3,361,000)	(2,878,000)
Deferred financing costs		(1,040,000)
Net cash provided by (used in) financing activities	932,000	(3,918,000)
Effect of exchange rate changes on cash and cash equivalents	(4,000)	(90,000)
Net increase (decrease) in cash and cash equivalents	6,416,000	(6,151,000)
Cash and cash equivalents at beginning of period	14,839,000	9,721,000
Cash and cash equivalents at end of period	21,255,000	3,570,000
Supplemental disclosures of non-cash investing and financing activities:
Reclassification of fair value of warrant liability to equity as a result of the amendment of the underlying common share purchase warrants	834,000
Value of warrants issued in connection with promissory notes	124,000
Change in the fair value of stock-based compensation liability recorded to contributed surplus	$ 118,000