Note 8 - Share-Based Compensation (Details) (USD $)	3 Months Ended
Jun. 30, 2014	Jun. 30, 2013
Note 8 - Share-Based Compensation (Details) [Line Items]
Number Of Shareholder Approved Share-Based Compensation Plans	2
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	2,275,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	545,191
Share Price (in Dollars per share)	$ 4.50
Employee Stock Option [Member] \| Non-Employee Director [Member] \| 2004 Directors Plan [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Share-Based Compensation Arrangement By Share-Based Payment Award, Options Grants, Initial, Gross	6,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 months
Employee Stock Option [Member] \| 2005 Plan [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense (in Dollars)	$ 192,000	$ 178,000
Employee Stock Option [Member] \| 2004 Directors Plan [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense (in Dollars)	0	0
Employee Stock Option [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)	$ 1,824,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 146 days
Employee Stock Option [Member] \| Maximum [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Restricted Stock [Member] \| Non-Employee Director [Member] \| 2004 Directors Plan [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 months
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Annual Grants	4,000
Restricted Stock [Member] \| Director Serving As Chairman of the Board [Member] \| 2004 Directors Plan [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 months
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Annual Grants	1,000
2005 Plan [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	2,075,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	424,068
2004 Directors Plan [Member]
Note 8 - Share-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	200,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	121,123

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Represents the number of shareholder approved plans under which shares were available for equity based awards.

+ References

No definition available.

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- Definition

The number of grants made to each director annually on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan)

+ References

No definition available.

+ Details

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- Definition

Gross number of share options (or share units) granted upon each initial election to the Board of Directors.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB

-Name Accounting Standards Codification

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Name Accounting Standards Codification

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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-Publisher FASB

-Name Accounting Standards Codification

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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.

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-SubTopic 10

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-Paragraph 2

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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