Loan facility (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Schedule of Loan Facility

	AMOUNT
BALANCE - January 1, 2013	$	—
Bank loan cash received - October 30, 2013		2,500,000
Warrant discount		(226,255	)
Financing costs		12,744
BALANCE - December 31, 2013		2,286,489
Accrued interest		9,844
Accretion of warrant discount		213,511
Repayment fee and penalty		100,000
Repayment of bank loan and interest		(2,609,844	)
BALANCE - December 31, 2014	$	—

Summary of Bank Loan Facility

	DECEMBER 31, 2014		DECEMBER 31, 2013
Short-term portion of bank loan	$	—	$	250,000
Long-term portion of bank loan		—		2,036,489
	$	—	$	2,286,489