Note 12 - Subsequent Event (Details Textual) - Revolving Credit Facility [Member] - Chief Executive Officer [Member] - USD ($)	Feb. 09, 2017	Sep. 30, 2016	Feb. 04, 2016
Line of Credit Facility, Maximum Borrowing Capacity		$ 2,700,000	$ 2,200,000
Subsequent Event [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 3,400,000

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant