Schedule II-Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Uncollectible accounts - trade
Reserves:
Balance at Beginning of Year		$ 134	$ 128
Charged to Cost and Expenses		(101)	37
Charged to Other Accounts			13
Deductions From Reserves		33	44
Balance at End of Year			134
Inventories
Reserves:
Balance at Beginning of Year		10,854	432
Charged to Cost and Expenses			10,900
Charged to Other Accounts			11
Deductions From Reserves		10,854	489
Balance at End of Year			10,854
Valuation allowance on deferred tax asset
Reserves:
Balance at Beginning of Year	$ 395	379	319
Charged to Cost and Expenses	(50)	16	60
Balance at End of Year	$ 345	$ 395	$ 379