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Share based payment award option forfeitures in period.

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- Definition

Share based compensation arrangement by share based payment awards options vested in period total fair value.

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

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Unrecognized cost of unvested share-based compensation awards.

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- Definition

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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- 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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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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- 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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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

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

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Number of suspense shares held by the Employee Stock Option Plan at balance sheet date. Suspense shares are shares that have not been released, committed to be released or allocated to individual participant accounts.

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Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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Share Based Awards (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Oct. 31, 2005
Share Based Awards (Textual) [Abstract]
Exercise of option grants	5 years
Outstanding options under 1998 and 2005 plan	1,636,176	1,370,101	1,159,183	988,337
Weighted-average grant date fair value of stock options	$ 3.50	$ 5.20	$ 8.22
Options granted under 2005 plan	469,650	469,000	556,500
Fair value of options vested	$ 2,224	$ 1,255	$ 1,696
Compensation expense	3,472	2,490	2,327
Stock Options [Member]
Share Based Awards (Textual) [Abstract]
Total unrecognized compensation costs	4,293
Stock option recognized over weighted average period	3 years 2 months 20 days
Restricted Stock Units Award [Member]
Share Based Awards (Textual) [Abstract]
Total unrecognized compensation costs	760
Stock option recognized over weighted average period	1 year 4 days
Compensation expense	877	629	566
Director Options [Member]
Share Based Awards (Textual) [Abstract]
Annualized forfeiture rate		0.00%
Two Thousand Five Stock Options Plan [Member]
Share Based Awards (Textual) [Abstract]
Common stock reserved					4,800,000
Outstanding options under 1998 and 2005 plan	1,636,176
Shares available for future grants	2,298,488
Two Thousand Five Stock Options Plan [Member] \| Option Grant Dates Fiscal Year Two Thousand Fourteen [Member]
Share Based Awards (Textual) [Abstract]
Options granted under 2005 plan	469,000
Two Thousand Five Stock Options Plan [Member] \| Option Grant Date Fiscal Year Two Thousand Thirteen [Member]
Share Based Awards (Textual) [Abstract]
Options granted under 2005 plan	556,500
Employee Share Purchase Plan (ESPP), Plan [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Issued	33,609
Share Based Awards (Textual) [Abstract]
Employee Stock Ownership Plan (ESOP), Shares in ESOP	3,966,391
Performance Based Awards [Member]
Share Based Awards (Textual) [Abstract]
Compensation expense	$ 463