Maximum dollar amount of common shares allowed to be purchased.

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- Definition

Share based compensation arrangement by share based payment Award contractual period.

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It represents the number of awards other than options which have vested but shares against which are yet to be issued due to post vesting restriction or finalization of vesting.

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No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

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- Definition

The amount of plan compensation cost recognized during the period.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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- Definition

Number of additional shares authorized for issuance under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

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

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Number of shares issued under share-based payment arrangement.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Stock-Based Compensation - Additional Information (Detail) - USD ($)			3 Months Ended		12 Months Ended
	Apr. 05, 2019	Apr. 11, 2012	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2018	May 09, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation cost			$ 17,135,000	$ 18,231,000
Options granted, contractual period, years			10 years
Options granted			431,924	1,771,068
Unrecognized stock-based compensation cost for options			$ 25,809,000
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average remaining requisite vesting period			3 years 6 months
Restricted Share Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average remaining requisite vesting period			2 years 3 months 18 days
Shares to be issued on vested awards other than options					44,562
Vested RSU issued during the period			44,165
Unrecognized stock-based compensation cost			$ 18,850,000
Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average remaining requisite vesting period			1 year 7 months 6 days
Unrecognized stock-based compensation cost			$ 66,146,000
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of fair value per share allowed to eligible employees to purchase through payroll deductions			90.00%
Maximum percentage of employee's base salary allowed to be purchased			15.00%
Maximum dollar amount of common shares allowed to be purchased			$ 25,000
Common shares reserved for issuance			4,200,000
Issuance of common shares under the employee stock purchase plan (in shares)			81,289	64,869
Compensation expense for ESPP			$ 352,000	$ 230,000
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years			4 years
Minimum \| Restricted Share Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years			3 months
Minimum \| Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years			6 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years			5 years
Maximum \| Restricted Share Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years			4 years
Maximum \| Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award, vesting period, years			3 years
2007 Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amended Omnibus Plan, increase in number of common shares authorized for issuance	8,000,000	5,593,200
Number of common shares authorized for issuance	23,000,000	15,000,000
2017 Omnibus Incentive Compensation Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common shares authorized for issuance						15,000,000