EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2017

Schedule of basic and diluted loss per share


	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017			2016

Net loss, basic	$	(27,520)	$	(17,475)	$	(54,997)	$	(51,263)
Effect of dilutive securities:
Change in fair value of warrants liability		—		(159)		(24)		(4,740)
Net loss, diluted	$	(27,520)	$	(17,634)	$	(55,021)	$	(56,003)

Shares used in calculating basic net loss per common share		66,110		64,360		65,901		58,258
Effect of dilutive securities:
Effect of dilutive stock options, RSUs						—		—
Warrants to purchase common shares - liability-classified		—		3		—		104
Shares used in calculating diluted net loss per common share		66,110		64,363		65,901		58,362

Net loss per common share, basic	$	(0.42)	$	(0.27)	$	(0.83)	$	(0.88)
Net loss per common share, diluted	$	(0.42)	$	(0.27)	$	(0.83)	$	(0.96)

Potential common shares excluded from the calculation of diluted net loss per share


	Three Months Ended June 30,		Six Months Ended June 30,
	2017	2016	2017	2016

Options to purchase common shares, RSUs and PSUs	9,128	7,334	9,128	7,334
Warrants to purchase common shares - equity-classified	884	3,561	884	992
2022 Notes convertible into common shares	9,057	9,057	9,057	9,057

Summary of warrants outstanding and exercisable


	No. of Warrants	Weighted-Average
Quarterly period of expiration	Outstanding	Exercise Price

Q1 2018	599	$	4.12
Q3 2018	16	$	3.78
Q4 2019	108	$	4.81
Q3 2020	110	$	4.09
Q1 2021	51	$	2.91
	884	$	4.13

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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