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Note 14 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Thousands, $ in Millions | 9 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Common Stock, Dividends, Per Share, Declared | $ 0 | $ 0 |
Share Buyback Program [Member] |  |  |
Stock Repurchase Program, Authorized Amount |  |  | $ 4.0
Stock Repurchased and Retired During Period, Shares | 211,326 | 0 |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 3.4 |  |

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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