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).

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)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ 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=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Note 9 - Share-based Compensation - Shares Authorized, Available for Future Grant and Outstanding Under Each Plan (Details) - shares	Mar. 31, 2017	Aug. 25, 2016	Mar. 31, 2016	Mar. 31, 2015	Aug. 28, 2014	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	1,564,124
Outstanding (in shares)	503,000		685,000	1,433,216		1,469,306
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,650,000
The 2016 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	1,275,000
Outstanding (in shares)	25,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,300,000	1,300,000
2014 Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	289,124
Outstanding (in shares)	12,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	350,000				350,000
The 2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Outstanding (in shares)	479,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
2004 Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Outstanding (in shares)	12,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized