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LOSS PER SHARE (Tables)
 3 Months Ended
Mar. 31, 2013
LOSS PER SHARE  
Schedule of calculation of earnings per share
Three Months Ended
March 31,
2013
2012
Net loss
$
(27,530
)
$
(12,921
)
Basic weighted-average number of common shares
outstanding (000s)
305,763

307,776

Diluted effect of stock options and RSUs (000s)(a)
—

—

Diluted effect of convertible debt (000s)(a)
—

—

Diluted weighted-average number of common shares
outstanding (000s)
305,763

307,776

Basic and diluted loss per share
$
(0.09
)
$
(0.04
)
____________________________________
(a)
In the three-month periods ended March 31, 2013 and 2012, all potential common shares issuable for stock options, RSUs and convertible debt were excluded from the calculation of diluted loss per share, as the effect of including them would have been anti-dilutive.
Schedule of dilutive effect of stock options, RSUs and Convertible Notes on weighted-average number of common shares outstanding
Three Months Ended
March 31,
 
2013
2012
Basic weighted-average number of common shares outstanding (000s)
305,763

307,776

Dilutive effect of stock options and RSUs (000s)
6,587

7,725

Dilutive effect of Convertible Notes (000s)
—

896

Diluted weighted-average number of common shares outstanding (000s)
312,350

316,397