Note 11 - Fair Value Measurements (Details) (USD $)	Sep. 30, 2014	Jul. 30, 2014 Sensima [Member]	Jul. 22, 2014 Sensima [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		$ 8,900,000	$ 8,900,000
Business Combination, Contingent Consideration, Liability	$ 2,507,000	$ 2,500,000	$ 2,507,000

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 25

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

Reference 2: 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

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