Consolidated and combined statements of cash flows (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities
Net loss	$ (24,027,016)	$ (8,729,371)	$ (7,714,198)
Non-cash items and reclassifications:
Amortization	135,946	59,571	130,784
Financing costs	319,635	14,242
Fees and penalty on bank loan repayment	100,000
Gain on sale of equipment	(14,672)	(134,553)
Amortization and extinguishment of remaining discount on preferred stock upon conversion of preferred stock	1,884,237	386,420	45,448
Change in fair value of derivative liabilities and gain on extinguishment of liabilities	(949,185)	(961,641)
Stock-based compensation	854,188	349,321	351,322
Stock-based purchase of patent rights	186,356
Foreign exchange loss and other	107,754
Changes in operating assets and liabilities:
Accounts and other amounts receivable	(37,502)	599	190,645
Prepayments and deposits	20,235	(102,792)	(12,076)
Accounts payable and accrued liabilities	3,614,459	1,180,190	(224,127)
Cash used in operating activities	(17,805,565)	(7,938,014)	(7,232,202)
Investing activities
Purchase of investments	(36,474,883)	(2,820,600)
Proceeds from maturity of investments	12,989,557
Purchase of property and equipment	(113,890)	(11,741)	(6,447)
Sale of property and equipment	25,894	191,817
Cash used in investing activities	(23,573,322)	(2,640,524)	(6,447)
Financing activities
Bank loan (repayment) advance	(2,500,000)	2,500,000
Loan costs, fees and penalty	(100,000)	(107,622)
Preferred stock (redemption) issued	(590)	18,003,361
Share issue costs		(223,910)
Proceeds from exercise of stock options	460
Initial public offering of common shares	53,130,000
Initial public offering costs	(5,251,288)	(587,438)
Cash provided by financing activities	45,278,582	19,584,391
Increase in cash and cash equivalents during the period	3,899,695	9,005,853	(7,238,649)
Cash and cash equivalents, beginning of period	11,006,392	2,000,539	9,239,188
Cash and cash equivalents, end of period	14,906,087	11,006,392	2,000,539
Supplemental disclosure of cash flow information:
Interest paid	31,719	22,604
Interest received	91,327	26,316
Non-cash financing activities:
Accrued offering costs		$ 790,000