Note 11 - Legal Proceedings (Details Textual)	Sep. 04, 2015 USD ($)
Settled Litigation [Member]
Litigation Settlement, Amount	$ 995,000

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration