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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

X

- 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.

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