Aggregate number of common shares reserved for future issuance.

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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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General descriptive information regarding an arrangement under which employees and directors receive: (a) awards of equity shares, equity share options, or other equity instruments; or (b) the entity incurs liabilities to them: (1) in amounts based, at least in part, on the price of the entity's shares or other equity instruments; or (2) that require or may require settlement by issuance of the entity's shares. Such an arrangement is usually provided to employees and directors to compensate them, provide performance incentives to them, and to attract or retain their services. May also include pertinent information particular to a plan that is not elsewhere specified in the taxonomy.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Net number of non-option equity instruments granted to participants.

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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- Definition

Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.

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Share based compensation arrangement by share based payment award equity instruments other than options grants in period grant date fair value.

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No definition available.

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Stock-Based Compensation (2017 Omnibus Plan) - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	May 24, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted stock awards	$ 2,872	$ 2,150
2017 Omnibus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted stock awards, Shares	100,000
Restricted stock awards	$ 3,600
Share-based compensation award description	the performance units, 50% of the award is based upon the achievement of certain levels of Return on Invested Capital for the performance period and 50% is based upon the achievement of certain levels of Free Cash Flow for the performance period.
Performance awards performance period	3 years
Number of nonqualified stock options granted	200,000
Number of stock options granted, Value	$ 2,000
2017 Omnibus Plan [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Number of performance units granted	100,000
Number of performance units granted, Value	$ 3,000
2017 Omnibus Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Common stock approved for issuance			3,500,000