Consolidated Statement of Shareholders' Equity (Deficit) - USD ($) $ in Thousands	Total		Preferred Stock [Member] Series A Preferred Stock [Member]	Preferred Stock [Member] Series B Preferred Stock [Member]	Preferred Stock [Member] Series E Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	[1]
Balance at Dec. 31, 2013	$ (78,372)		$ 2,939	$ 8,683	$ 90,866	$ 6,147	$ 29,722	$ (116,752)	$ 2,511
Balance (in Shares) at Dec. 31, 2013			1,151,468	994,885	4,322,126	1,344,627
Net income (loss)	13,018							13,018
Conversion of Series A, B and E convertible preferred shares	102,488		$ (2,939)	$ (8,683)	$ (90,866)	$ 102,488
Conversion of series A, B and E convertible preferred shares (in Shares)			(1,151,468)	(994,885)	(4,322,126)	7,725,924
Issuance of common shares, net of issuance costs	38,373					$ 38,373
Issuance of common shares, net of issuance costs (in Shares)						5,095,000
Cumulative translation adjustment	(3,501)								(3,501)
Stock-based compensation expense	760						760
Issuance of common shares on conversion of subscription rights						$ 124	(124)
Issuance of common shares on conversion of subscription rights (in Shares)						13,365
Issued pursuant to exercise of stock options	$ 13					$ 25	(12)
Issued pursuant to exercise of stock options (in Shares)	2,417					2,417
Balance at Dec. 31, 2014	$ 72,779					$ 147,157	30,346	(103,734)	(990)
Balance (in Shares) at Dec. 31, 2014						14,181,333
Net income (loss)	(15,752)							(15,752)
Stock-based compensation expense	2,077						2,077
Issued pursuant to exercise of stock options	$ 278					$ 1,477	(992)	(207)
Issued pursuant to exercise of stock options (in Shares)	270,254					204,003
Fair value adjustment upon reclassification of stock options (note 3l)	$ 1,652						1,652
Balance at Dec. 31, 2015	61,034					$ 148,634	33,083	(119,693)	(990)
Balance (in Shares) at Dec. 31, 2015						14,385,336
Net income (loss)	(22,997)							(22,997)
Issuance of common shares, net of issuance costs	23,832					$ 23,832
Issuance of common shares, net of issuance costs (in Shares)						3,450,000
Stock-based compensation expense	2,186						2,186
Issued pursuant to exercise of stock options	$ 132					$ 780	(657)	9
Issued pursuant to exercise of stock options (in Shares)	121,292	[2]				95,254
Fair value adjustment upon reclassification of stock options (note 3l)	$ (286)						(286)
Balance at Dec. 31, 2016	$ 63,901					$ 173,246	$ 34,326	$ (142,681)	$ (990)
Balance (in Shares) at Dec. 31, 2016						17,930,590

[1] At December 31, 2016, our accumulated other comprehensive loss is entirely related to historical cumulative translation adjustments from the application of U.S. dollar reporting when the functional currency of the Company was the Canadian dollar as described in note 3n.

[2] During the year ended December 31, 2016, 47,413 (2015 - 70,438) stock options were exercised for the same number of common shares in exchange for cash. In the same period, the Company issued 47,841 (2015 - 133,565) common shares for the cashless exercise of 73,879 (2015 - 199,816) stock options.