Consolidated Statements of Equity - 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]	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, 2014											317,288
Balance at Nov. 30, 2014											$ 1,936,336	$ 74,038	$ (1,640,103)	$ 34,845	$ 405,116
Share-based compensation												9,488			9,488
Share-based awards settled in shares (in shares)	506				506
Share-based awards settled in shares	$ 1,507	$ (1,507)
Stock options exercised (in shares)											116
Stock options exercised											$ 419	(419)
Withholding tax on PSUs												(826)			(826)
Net loss													(31,952)		(31,952)
Other comprehensive income (loss)														(52,530)	(52,530)
Balance (in shares) at Nov. 30, 2015											317,910
Balance at Nov. 30, 2015											$ 1,938,262	80,774	(1,672,055)	(17,685)	329,296
Share-based compensation												10,263			10,263
Share-based awards settled in shares (in shares)	1,377				1,377
Share-based awards settled in shares	$ 2,679	(2,679)
Stock options exercised (in shares)											729
Stock options exercised											$ 1,510	(1,510)
Withholding tax on PSUs												(4,275)			(4,275)
Net loss													(33,846)		(33,846)
Other comprehensive income (loss)														(1,175)	(1,175)
Balance (in shares) at Nov. 30, 2016											320,016
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				1,513	28
Share-based awards settled in shares	$ 4,000	$ (4,000)				$ 122	$ (122)
Stock options exercised (in shares)											662				3,554
Stock options exercised											$ 5,014	(5,014)
Withholding tax on PSUs												(196)			(196)
Net loss													(39,016)		(39,016)
Other comprehensive income (loss)														12,685	12,685
Balance (in shares) at Nov. 30, 2017											322,219
Balance at Nov. 30, 2017											$ 1,951,587	$ 83,534	$ (1,744,917)	$ (6,175)	$ 284,029