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Note 8 - Equity Plans (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 6 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Mar. 01, 2015 | Mar. 01, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Sep. 30, 2014
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  | 0 | 7,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars) |  |  |  | $ 103 |
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Number of Shares Per Employee |  |  | 750 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Matching Purchase Requirement |  |  | 500 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Match |  |  | 250 |  |
Restricted Stock Units Units Number Converted |  |  | 2,437 | 1,250 |
Common Stock [Member] |  |  |  |  |
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |  |  | 500,000 |  |
Share Price (in Dollars per share) | $ 15.09 | $ 27.51 |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 4,639 | 2,544 | 69,771 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  | 1 year
Restricted Stock Units (RSUs) [Member] | Five Year Anniversary [Member] |  |  |  |  |
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested (in Dollars) |  |  | $ 25 |  |
Restricted Stock Units (RSUs) [Member] | Ten Year Anniversary [Member] |  |  |  |  |
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested (in Dollars) |  |  | 50 |  |
Restricted Stock Units (RSUs) [Member] | Fifteen Year Anniversary [Member] |  |  |  |  |
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested (in Dollars) |  |  | 75 |  |
Restricted Stock Units (RSUs) [Member] | Twenty Year Anniversary [Member] |  |  |  |  |
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested (in Dollars) |  |  | 100 |  |
Restricted Stock Units (RSUs) [Member] | Twenty Five Year Anniversary [Member] |  |  |  |  |
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested (in Dollars) |  |  | $ 100 |  |
Match [Member] |  |  |  |  |
Note 8 - Equity Plans (Details) [Line Items] |  |  |  |  |
Shares Matched |  |  | 7,750 | 7,250 |

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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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