Stockholders' Equity (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
Sep. 30, 2013
Schedule of Option Activity Under Stock Incentive Plans
Number of Shares, Outstanding at the beginning of the year	3,492
Number of Shares, Granted	40
Number of Shares, Exercised	(495)
Number of Shares, Forfeited	(367)
Number of Shares, Outstanding at the end of the period	2,670
Number of Shares, Vested at the end of the period	2,667
Schedule of Weighted Average Exercise Price Per Share Under Stock Incentive Plans
Weighted Average Exercise Price Per Share, Outstanding at the beginning of the year (USD per share)	$ 10.26
Weighted Average Exercise Price Per Share, Granted (USD per share)	$ 7.35
Weighted Average Exercise Price Per Share, Exercised (USD per share)	$ 8.97
Weighted Average Exercise Price Per Share, Forfeited (USD per share)	$ 10.15
Weighted Average Exercise Price Per Share, Outstanding at the end of the period (USD per share)	$ 10.47
Weighted Average Exercise Price Per Share, Vested at the end of the period (USD per share)	$ 10.47
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	2,512
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 10.56

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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