Note 2 - Summary of Significant Accounting Policies (Details Textual) - Canadian Government Grants [Member]	9 Months Ended
Sep. 30, 2016 USD ($)
Minimum [Member]
Grant term	180 days
Maximum [Member]
Grant term	1 year 180 days
Number of Grants Received	30
Grants Receivable	$ 1,100,000

Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_GrantsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant