Note 5 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($)	Dec. 31, 2016	Sep. 30, 2016
Gross intangibles	$ 24,475,000	$ 24,629,000
Accumulated amortization	(17,746,000)	(16,676,000)
	6,729,000	7,953,000
Customer Relationships [Member]
Gross intangibles	21,950,000	22,104,000
Accumulated amortization	(15,882,000)	(14,938,000)
	6,068,000	7,166,000
Developed Technology Rights [Member]
Gross intangibles	2,525,000	2,525,000
Accumulated amortization	(1,864,000)	(1,738,000)
	$ 661,000	$ 787,000

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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