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Note 2 - Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) | Sep. 30, 2016 | Sep. 30, 2015
--- | --- | ---
Customer Relationships [Member] |  |
Gross intangible | $ 22,104,000 | $ 22,104,000
Accumulated amortization | (14,938,000) | (10,406,000)
| 7,166,000 | 11,698,000
Developed Technology Rights [Member] |  |
Gross intangible | 2,525,000 | 2,525,000
Accumulated amortization | (1,738,000) | (1,233,000)
| 787,000 | 1,292,000
Gross intangible | 24,629,000 | 24,629,000
Accumulated amortization | (16,676,000) | (11,639,000)
| $ 7,953,000 | $ 12,990,000

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References 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 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References 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 + Details
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