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Condensed Consolidated Interim Statements of Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balance (in shares) at Nov. 30, 2018 323,223        
Balance at Nov. 30, 2018 $ 1,954,861 $ 87,987 $ (1,857,682) $ (24,478) [1] $ 160,688
Share-based compensation $ 0 1,531 0 0 [1] 1,531
Share-based awards settled in shares (in shares) 438        
Share-based awards settled in shares $ 2,737 (2,737) 0 0 [1] 0
Stock options exercised (in shares) 1,443        
Stock options exercised $ 2,867 (2,867) 0 0 [1] 0
Withholding tax on PSUs 0 (1,197) 0 0 [1] (1,197)
Net loss 0 0 (6,323) 0 [1] (6,323)
Other comprehensive income (loss) 0 0 0 519 [1] 519
Cumulative-effect adjustment of adopting ASU No. 2016-01 $ 0 0 378 (378) [1] 0
Balance (in shares) at Feb. 28, 2019 325,104        
Balance at Feb. 28, 2019 $ 1,960,465 82,717 (1,863,627) (24,337) [1] 155,218
Balance (in shares) at Nov. 30, 2018 323,223        
Balance at Nov. 30, 2018 $ 1,954,861 87,987 (1,857,682) (24,478) [1] 160,688
Net loss         (19,894)
Other comprehensive income (loss)         22
Balance (in shares) at Aug. 31, 2019 326,788        
Balance at Aug. 31, 2019 $ 1,964,304 81,972 (1,877,198) (24,834) 144,244
Balance (in shares) at Feb. 28, 2019 325,104        
Balance at Feb. 28, 2019 $ 1,960,465 82,717 (1,863,627) (24,337) [1] 155,218
Share-based compensation $ 0 1,542 0 0 [1] 1,542
Stock options exercised (in shares) 205        
Stock options exercised $ 468 (468) 0 0 [1] 0
Net loss 0 0 (5,515) 0 [1] (5,515)
Other comprehensive income (loss) $ 0 0 0 (1,397) [1] (1,397)
Balance (in shares) at May. 31, 2019 325,309        
Balance at May. 31, 2019 $ 1,960,933 83,791 (1,869,142) (25,734) [1] 149,848
Share-based compensation $ 0 1,552 0 0 1,552
Share-based awards settled in shares (in shares) 32        
Share-based awards settled in shares $ 120 (120) 0 0 0
Stock options exercised (in shares) 1,447        
Stock options exercised $ 3,251 (3,251) 0 0 0
Net loss 0 0 (8,056) 0 (8,056)
Other comprehensive income (loss) $ 0 0 0 900 900
Balance (in shares) at Aug. 31, 2019 326,788        
Balance at Aug. 31, 2019 $ 1,964,304 81,972 (1,877,198) (24,834) 144,244
Balance (in shares) at Nov. 30, 2019 327,630        
Balance at Nov. 30, 2019 $ 1,965,573 82,254 (1,885,065) (24,808) [1] 137,954
Share-based compensation $ 0 1,761 0 0 [1] 1,761
Share-based awards settled in shares (in shares) 410        
Share-based awards settled in shares $ 1,026 (1,026) 0 0 [1] 0
Stock options exercised (in shares) 560        
Stock options exercised $ 1,618 (1,618) 0 0 [1] 0
Withholding tax on PSUs 0 (1,652) 0 0 [1] (1,652)
Net loss 0 0 (6,595) 0 [1] (6,595)
Other comprehensive income (loss) $ 0 0 0 (455) [1] (455)
Balance (in shares) at Feb. 29, 2020 328,600        
Balance at Feb. 29, 2020 $ 1,968,217 79,719 (1,891,660) (25,263) [1] 131,013
Balance (in shares) at Nov. 30, 2019 327,630        
Balance at Nov. 30, 2019 $ 1,965,573 82,254 (1,885,065) (24,808) [1] $ 137,954
Stock options exercised (in shares)         2,661
Net loss         $ (26,564)
Other comprehensive income (loss)         731
Balance (in shares) at Aug. 31, 2020 329,598        
Balance at Aug. 31, 2020 $ 1,970,299 81,135 (1,911,629) (24,077) 115,728
Balance (in shares) at Feb. 29, 2020 328,600        
Balance at Feb. 29, 2020 $ 1,968,217 79,719 (1,891,660) (25,263) [1] 131,013
Share-based compensation $ 0 1,715 0 0 [1] 1,715
Stock options exercised (in shares) 998        
Stock options exercised $ 2,082 (2,082) 0 0 [1] 0
Net loss 0 0 (7,233) 0 [1] (7,233)
Other comprehensive income (loss) $ 0 0 0 (1,159) [1] (1,159)
Balance (in shares) at May. 31, 2020 329,598        
Balance at May. 31, 2020 $ 1,970,299 79,352 (1,898,893) (26,422) [1] 124,336
Share-based compensation 0 1,783 0 0 1,783
Net loss 0 0 (12,736) 0 (12,736)
Other comprehensive income (loss) $ 0 0 0 2,345 2,345
Balance (in shares) at Aug. 31, 2020 329,598        
Balance at Aug. 31, 2020 $ 1,970,299 $ 81,135 $ (1,911,629) $ (24,077) $ 115,728
[1] Accumulated other comprehensive loss