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, 2017 | 322,219 | | | | | |
Balance at Nov. 30, 2017 | $ 1,951,587 | $ 83,534 | $ (1,744,917) | $ (6,175) | [1] | $ 284,029 |
Share-based compensation | $ 0 | 1,949 | 0 | 0 | [1] | 1,949 |
Stock options exercised (in shares) | 83 | | | | | |
Stock options exercised | $ 977 | (977) | 0 | 0 | [1] | 0 |
Net loss | 0 | 0 | (8,215) | 0 | [1] | (8,215) |
Other comprehensive income | $ 0 | 0 | 0 | 1,774 | [1] | 1,774 |
Balance (in shares) at Feb. 28, 2018 | 322,302 | | | | | |
Balance at Feb. 28, 2018 | $ 1,952,564 | 84,506 | (1,753,132) | (4,401) | [1] | 279,537 |
Balance (in shares) at Nov. 30, 2017 | 322,219 | | | | | |
Balance at Nov. 30, 2017 | $ 1,951,587 | 83,534 | (1,744,917) | (6,175) | [1] | 284,029 |
Net loss | | | | | | (106,471) |
Other comprehensive loss | | | | | | (17,846) |
Balance (in shares) at Aug. 31, 2018 | 322,533 | | | | | |
Balance at Aug. 31, 2018 | $ 1,953,305 | 87,627 | (1,851,388) | (24,021) | [1] | 165,523 |
Balance (in shares) at Feb. 28, 2018 | 322,302 | | | | | |
Balance at Feb. 28, 2018 | $ 1,952,564 | 84,506 | (1,753,132) | (4,401) | [1] | 279,537 |
Share-based compensation | $ 0 | 1,942 | 0 | 0 | [1] | 1,942 |
Stock options exercised (in shares) | 24 | | | | | |
Stock options exercised | $ 59 | (59) | 0 | 0 | [1] | 0 |
Net loss | 0 | 0 | (9,631) | 0 | [1] | (9,631) |
Other comprehensive loss | $ 0 | 0 | 0 | (3,370) | [1] | (3,370) |
Balance (in shares) at May. 31, 2018 | 322,326 | | | | | |
Balance at May. 31, 2018 | $ 1,952,623 | 86,389 | (1,762,763) | (7,771) | [1] | 268,478 |
Share-based compensation | $ 0 | 1,920 | 0 | 0 | [1] | 1,920 |
Share-based awards settled in shares (in shares) | 61 | | | | | |
Share-based awards settled in shares | $ 293 | (293) | 0 | 0 | [1] | 0 |
Stock options exercised (in shares) | 146 | | | | | |
Stock options exercised | $ 389 | (389) | 0 | 0 | [1] | 0 |
Net loss | 0 | 0 | (88,625) | 0 | [1] | (88,625) |
Other comprehensive loss | $ 0 | 0 | 0 | (16,250) | | (16,250) |
Balance (in shares) at Aug. 31, 2018 | 322,533 | | | | | |
Balance at Aug. 31, 2018 | $ 1,953,305 | 87,627 | (1,851,388) | (24,021) | [1] | 165,523 |
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 |
Cumulative-effect adjustment of adopting ASU No. 2016-01 | 0 | 0 | 378 | (378) | [1] | 0 |
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 | $ 0 | 0 | 0 | 519 | [1] | 519 |
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 |
Stock options exercised (in shares) | | | | | | 6,668 |
Net loss | | | | | | $ (19,894) |
Other comprehensive 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) | [1] | 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 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] | 1,552 |
Share-based awards settled in shares (in shares) | 32 | | | | | |
Share-based awards settled in shares | $ 120 | (120) | 0 | 0 | [1] | 0 |
Stock options exercised (in shares) | 1,447 | | | | | |
Stock options exercised | $ 3,251 | (3,251) | 0 | 0 | [1] | 0 |
Net loss | 0 | 0 | (8,056) | 0 | [1] | (8,056) |
Other comprehensive income | $ 0 | 0 | 0 | 900 | [1] | 900 |
Other comprehensive loss | | | | | | 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) | [1] | $ 144,244 |
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[1] | Accumulated other comprehensive loss |