Share-Based Compensation Arrangement By Share-Based Payment Award, Forfeiture Period

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Additional Shares Available for Grants, Percentage of Capital Stock Outstanding, Percentage

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- Definition

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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

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

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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- Definition

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

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

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

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

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- Definition

Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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-Publisher FASB
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- Definition

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 (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended			6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017	Jul. 31, 2019	Jul. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				2,600,000
Percentage of capital stock				3.00%
Expected dividend yield				0.00%	0.00%
Unrecognized stock compensation expense to be recognized in future				$ 10.5
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period				10 years
Forfeiture period				90 days
Weighted-average vesting period of non-vested awards expected to vest				1 year 7 months 6 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average vesting period of non-vested awards expected to vest				2 years 8 months 12 days
Award vesting period				4 years
Performance units awards (in shares)				527,000
Aggregate intrinsic value				$ 8.8	$ 4.6
Unrecognized stock-based compensation expense related to restricted stock units to be recognized in future				$ 52.1
Performance restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance units awards (in shares)	129,963		146,964
Performance restricted stock units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage	0.00%		0.00%
Performance restricted stock units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage	200.00%		150.00%
Performance restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance units awards (in shares)		227,760
Performance restricted stock awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage		0.00%
Performance restricted stock awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage		200.00%
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average vesting period of non-vested awards expected to vest				1 year 9 months 18 days
Award vesting period				4 years
Performance units awards (in shares)				0
Aggregate intrinsic value				$ 0.8
Unrecognized stock-based compensation expense related to restricted stock units to be recognized in future				$ 5.4