CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2013	$ 114,282us-gaap_StockholdersEquity	$ 845	$ 189,465	$ (76,028)
Exercise of stock options and vesting of RSU	1,944	13	1,931	0
Exercise of warrants	2,011	7	2,004	0
Stock-based compensation	2,800	0	2,800	0
Net loss for the period	(11,109)us-gaap_NetIncomeLoss	0	0	(11,109)
Balance at Mar. 31, 2014	109,928us-gaap_StockholdersEquity	865	196,200	(87,137)
Balance at Dec. 31, 2014	31,180us-gaap_StockholdersEquity	934	215,951	(185,705)
Exercise of stock options and vesting of RSU	0	2	(2)	0
Change in classification of derivative warrants to equity warrants	175	0	175	0
Stock-based compensation	1,872	0	1,872	0
Net loss for the period	(6,976)us-gaap_NetIncomeLoss	0	0	(6,976)
Balance at Mar. 31, 2015	$ 26,251us-gaap_StockholdersEquity	$ 936	$ 217,996	$ (192,681)

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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