Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total		Common Shares [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	[1]
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 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)			95,254
Fair value adjustment upon reclassification of stock options	(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
Net loss	(14,897)				(14,897)
Stock-based compensation expense	1,271			1,271
Issued pursuant to exercise of stock options	$ 177		$ 595	(415)	(3)
Issued pursuant to exercise of stock options (in Shares)	71,006	[2]	67,830
Balance at Jun. 30, 2017	$ 50,452		$ 173,841	$ 35,182	$ (157,581)	$ (990)
Balance (in Shares) at Jun. 30, 2017			17,998,420

[1] 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.

[2] During the six months ended June 30, 2017, 63,425 stock options were exercised for the same number of common shares for cash (six months ended June 30, 2016 – 29,270). In the same period, the Company issued 4,405 common shares (six months ended June 30, 2016 – 741) for the cashless exercise of 7,581 stock options (six months ended June 30, 2016 – 1,259).