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Condensed Consolidated Interim Statements of Equity (Unaudited) - USD ($)
$ in Thousands
Performance Share Units [Member]
Common Stock [Member]
Performance Share Units [Member]
Additional Paid-in Capital [Member]
Performance Share Units [Member]
Retained Earnings [Member]
Performance Share Units [Member]
AOCI Attributable to Parent [Member]
Performance Share Units [Member]
Deferred Share Units [Member]
Common Stock [Member]
Deferred Share Units [Member]
Additional Paid-in Capital [Member]
Deferred Share Units [Member]
Retained Earnings [Member]
Deferred Share Units [Member]
AOCI Attributable to Parent [Member]
Deferred Share Units [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balance (in shares) at Nov. 30, 2016                     320,016,000        
Balance at Nov. 30, 2016                     $ 1,942,451 $ 82,573 $ (1,705,901) $ (18,860) $ 300,263
Share-based compensation                     10,293 10,293
Share-based awards settled in shares (in shares) 1,513,000         28,000                  
Share-based awards settled in shares $ 4,000 $ (4,000) $ 122 $ (122)          
Stock options exercised (in shares)                     662,000        
Stock options exercised                     $ 5,014 (5,014)
Withholding tax on PSUs                     (196) (196)
Net loss                         (39,016)   (39,016)
Other comprehensive income                           12,685 12,685
Balance (in shares) at Nov. 30, 2017                     322,219,000        
Balance at Nov. 30, 2017                     $ 1,951,587 83,534 (1,744,917) (6,175) 284,029
Share-based compensation                     1,949 $ 1,949
Share-based awards settled in shares (in shares)                            
Stock options exercised (in shares)                     83,000       725
Stock options exercised                     $ 977 (977)
Net loss                         (8,215)   (8,215)
Other comprehensive income                     1,774 1,774
Balance (in shares) at Feb. 28, 2018                     322,302,000        
Balance at Feb. 28, 2018                     $ 1,952,564 $ 84,506 $ (1,753,132) $ (4,401) $ 279,537