Note 15 - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) - Changes in AOCI and Details About AOCI (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Balance, beginning		$ (18,860)
Change in other comprehensive income (loss) before reclassifications		12,685
Reclassifications from accumulated other comprehensive income (loss)		0
Net current-period other comprehensive income (loss)		12,685	$ (1,175)	$ (52,530)
Balance, ending		(6,175)	(18,860)
Marketable equity securities adjustments
Impairment of marketable equity securities (1)	[1]	0		426
Tax benefit (expense)		0	0	0
Net of tax		0		$ 426
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance, beginning		572
Change in other comprehensive income (loss) before reclassifications		271
Reclassifications from accumulated other comprehensive income (loss)		0
Net current-period other comprehensive income (loss)		271
Balance, ending		843	572
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance, beginning		(19,432)
Change in other comprehensive income (loss) before reclassifications		12,414
Reclassifications from accumulated other comprehensive income (loss)		0
Net current-period other comprehensive income (loss)		12,414
Balance, ending		$ (7,018)	$ (19,432)

[1] This accumulated other comprehensive income (loss) component is included in Other income (expense) in the Consolidated Statements of Loss.