Share-based Compensation (Details 1) (Stock Options [Member], USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
Dec. 31, 2012
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at April 1, 2012, Number of Options	971,001
Outstanding at April 1, 2012, Weighted Average Exercise Price	$ 13.52
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	0
Share-based Compensation Arrangements by Share Based Payment Award Non Option Equity Instruments Grants in Period Weighted Average Exercise Price	$ 0.00
Exercised, Number of Options	(66,667)
Exercised, Weighted-Average Exercise Price	$ 2.51
Cancelled/expired, Number of options	(134,834)
Cancelled/Expired, Weighted-Average Exercise Price	$ 14.55
Outstanding and exercisable at December 31, 2012, Number of Options	769,500
Outstanding and exercisable at December 31, 2012, Weighted Average Exercise Price	$ 14.30
Remaining Contractual Term, Outstanding and exercisable at December 31, 2012	3 years 2 months 12 days
Aggregate Intrinsic Value, Outstanding and exercisable at December 31, 2012	$ 234

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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=6415400&loc=d3e5070-113901

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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Number of share options (or share units) exercised during the current period.

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