Condensed Consolidated Interim Statements of Equity (Unaudited) - USD ($) shares in Thousands, $ 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]	[1]	Performance 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, 2020							330,412
Balance at Nov. 30, 2020							$ 1,972,029	$ 81,203	$ (1,918,629)	$ (23,876)	[1]	$ 110,727
Share-based compensation								2,042				2,042
Share-based awards settled in shares (in shares)							574
Share-based awards settled in shares							$ 1,460	(1,460)
Stock options exercised (in shares)							345
Stock options exercised							$ 777	(777)
Withholding tax on PSUs								(731)				(731)
Net loss									(7,956)			(7,956)
Other comprehensive income (loss)							(0)	(0)	(0)	(778)		(778)
Other comprehensive loss							$ 0	0	0	778		778
Net loss									7,956			7,956
Balance (in shares) at Feb. 28, 2021							331,331
Balance at Feb. 28, 2021							$ 1,974,266	80,277	(1,926,585)	(23,098)	[1]	104,860
Balance (in shares) at Nov. 30, 2020							330,412
Balance at Nov. 30, 2020							$ 1,972,029	81,203	(1,918,629)	(23,876)	[1]	110,727
Share-based awards settled in shares (in shares)						574
Net loss												(18,477)
Net loss												18,477
Balance (in shares) at May. 31, 2021							331,525
Balance at May. 31, 2021							$ 1,974,884	81,754	(1,937,106)	(21,404)	[1]	98,128
Balance (in shares) at Feb. 28, 2021							331,331
Balance at Feb. 28, 2021							$ 1,974,266	80,277	(1,926,585)	(23,098)	[1]	104,860
Share-based compensation								2,095				2,095
Stock options exercised (in shares)							194
Stock options exercised							$ 618	(618)
Net loss									(10,521)			(10,521)
Other comprehensive income (loss)							(0)	(0)	(0)	(1,694)		(1,694)
Other comprehensive loss							$ 0	0	0	1,694		1,694
Net loss									10,521			10,521
Balance (in shares) at May. 31, 2021							331,525
Balance at May. 31, 2021							$ 1,974,884	81,754	(1,937,106)	(21,404)	[1]	98,128
Balance (in shares) at Nov. 30, 2021							332,416
Balance at Nov. 30, 2021							$ 1,978,520	82,216	(1,959,165)	(23,289)	[1]	78,282
Share-based compensation							$ 0	2,091	0	0	[1]	2,091
Share-based awards settled in shares (in shares)	430
Share-based awards settled in shares	$ 1,731	$ (1,731)	$ 0	$ 0		$ 0
Stock options exercised (in shares)							144
Stock options exercised							$ 550	(550)	0	0	[1]	0
Withholding tax on PSUs							0	(2,122)	0	0	[1]	(2,122)
Net loss							0	0	(9,995)	0	[1]	(9,995)
Other comprehensive income (loss)							0	0	0	178	[1]	178
Other comprehensive loss							0	0	0	(178)	[1]	(178)
Net loss							$ 0	0	9,995	0	[1]	9,995
Balance (in shares) at Feb. 28, 2022							332,990
Balance at Feb. 28, 2022							$ 1,980,801	79,904	(1,969,160)	(23,111)	[1]	68,434
Balance (in shares) at Nov. 30, 2021							332,416
Balance at Nov. 30, 2021							$ 1,978,520	82,216	(1,959,165)	(23,289)	[1]	$ 78,282
Share-based awards settled in shares (in shares)						430
Stock options exercised (in shares)												1,086
Net loss												$ (24,965)
Net loss												24,965
Balance (in shares) at May. 31, 2022							333,337
Balance at May. 31, 2022							$ 1,981,785	81,025	(1,984,130)	(23,025)	[1]	55,655
Balance (in shares) at Feb. 28, 2022							332,990
Balance at Feb. 28, 2022							$ 1,980,801	79,904	(1,969,160)	(23,111)	[1]	68,434
Share-based compensation							$ 0	2,105	0	0	[1]	2,105
Stock options exercised (in shares)							347
Stock options exercised							$ 984	(984)	0	0	[1]	0
Net loss							0	0	(14,970)	0	[1]	(14,970)
Other comprehensive income (loss)							0	0	0	86	[1]	86
Other comprehensive loss							0	0	0	(86)	[1]	(86)
Net loss							$ 0	0	14,970	0	[1]	14,970
Balance (in shares) at May. 31, 2022							333,337
Balance at May. 31, 2022							$ 1,981,785	$ 81,025	$ (1,984,130)	$ (23,025)	[1]	$ 55,655

[1] Accumulated other comprehensive loss