Annualized estimated forfeiture rate.

No definition available.

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- Definition

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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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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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- Definition

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

Percentage of vesting of share-based compensation awards.

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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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Stock Based Compensation and Stock Options - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-statutory stock options expiration period			5 years
Options expected forfeiture rate, percentage	12.28%	12.46%
Weighted-average grant-date fair value of options granted	$ 12.53	$ 15.84
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-statutory stock options expiration period			10 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-statutory stock options vesting period			1 year
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock grants	19,365,000		19,365,000
Non-statutory stock options vesting period			36 months
Time Based Options and Performance Based Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock compensation expense	$ 488,000	$ 445,000	$ 1,104,000	$ 1,162,000
Performance Based Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock compensation expense	$ 63,000	$ 64,000
Vest One Year from Date of Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Percentage			25.00%
Vest Ratably Each Month Over 36 Months [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Percentage			75.00%