Note 4 - Assets and Liabilities Measured at Fair Values on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Sep. 30, 2015
Fair Value, Inputs, Level 3 [Member]
Liabilities:
Contingent acquisition consideration	$ 301	$ 468
Total liabilities	301	$ 468
Fair Value, Inputs, Level 2 [Member]
Liabilities:
Total liabilities
Contingent acquisition consideration	301	$ 468
Total liabilities	$ 301	$ 468

Amount of liability recognized arising from contingent consideration in a business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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