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

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Represents the weighted average grant-date fair value of options granted during the reporting period.

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The maximum number of shares (or other type of equity) originally approved to be issued in connection with performance awards and stock awards (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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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.

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Unrecognized cost of unvested share-based compensation awards.

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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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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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

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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.

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Note 9 - Share-based Compensation (Details Textual)		12 Months Ended
Note 9 - Share-based Compensation (Details Textual)	Apr. 05, 2018 $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares	Mar. 31, 2017 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares	Aug. 25, 2016 shares	Mar. 31, 2015 $ / shares	Aug. 28, 2014 shares
Number of Shareholder Approved Share-based Compensation Plans		2
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,363,615
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		1,650,000
Share Price \| $ / shares		$ 5.10	$ 3.85	$ 4.98		$ 8.42
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value \| $		$ 67,000	$ 23,000	$ 58,000
ShareBased Compensation Arrangement By Share Based Payment Award Weighted Average Grant Date Fair Value Options Granted \| $		67,000	5,000	7,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value \| $		57,000	332,000	651,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total \| $		181,000
Employee Stock Option [Member]
Allocated Share-based Compensation Expense, Total \| $		$ 62,000	154,000	587,000
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		2 years 109 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		28,074
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares		$ 3.92
Restricted Stock Units (RSUs) [Member] \| Employees [Member]
Allocated Share-based Compensation Expense, Total \| $		$ 62,000	0	0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total \| $		122,730
Restricted Stock Units (RSUs) [Member] \| Employees [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	1,474
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares	$ 5.25
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years
Restricted Stock [Member] \| Non-employee Directors [Member]
Allocated Share-based Compensation Expense, Total \| $		$ 276,000	$ 78,000	$ 78,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		57,501	19,117	13,198
Maximum [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
The 2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
The 2016 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,131,992
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					1,300,000
The 2016 Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,131,992
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		1,300,000
The 2016 Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized for Issuance in Connection with Performance Awards and Stock Awards					600,000
2014 Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		231,623
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		350,000					350,000
2004 Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized