Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Net Cash Provided by (Used in) Operating Activities	$ (8,280)	$ (7,421)	$ (10,599)
Net Cash Provided by (Used in) Financing Activities	$ (196)	(4,275)	(16,656)
Accounting Standards Update 2016-09 [Member]
Net Cash Provided by (Used in) Operating Activities		4,275	827
Net Cash Provided by (Used in) Financing Activities		$ (4,275)	$ (827)
Maximum [Member]
Term Deposits, Original Maturities	1 year

Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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