Note 13 - Share-based Compensation - PSU Awards Outstanding and PSU Activity (Details) - Performance Share Units [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Nov. 30, 2017 USD ($) $ / shares shares
Balance - beginning of year (in shares) | shares	2,619,000
Balance - beginning of year (in dollars per share) | $ / shares	$ 3.15
Granted (in shares) | shares	940,000
Granted (in dollars per share) | $ / shares	$ 4.58
Vested (in shares) | shares	(1,556,000)
Vested (in dollars per share) | $ / shares	$ 2.83
Performance adjustment (in shares) | shares	179,000
Performance adjustment (in dollars per share) | $ / shares	$ 2.83
Forfeited (in shares) | shares	(6,000)
Forfeited (in dollars per share) | $ / shares	$ 4.32
Balance - end of year (in shares) | shares	2,176,000
Balance - end of year (in dollars per share) | $ / shares	$ 4.10
Aggregate intrinsic value - end of year | $	$ 2,158