Common Stock, Capital Shares, Reserved for Future Issuance, New Shares

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- Definition

Common Stock, Capital Shares Reserved for Future Issuance, Unissued Shares

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- Definition

Restricted Stock Units, Number of Securities Into Which Each RSU May Be Converted

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Extension of Expiration Period

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
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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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- 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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
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- Definition

The highest quantity of shares an employee can purchase under the plan per period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

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

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The grant-date intrinsic value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

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

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Share-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions				1 Months Ended	6 Months Ended
	Aug. 04, 2020	May 04, 2020	May 31, 2014	Jun. 30, 2014	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation, Aggregate Disclosures:
Maximum number of shares per participant, 12 month period (in shares)			1,000,000.0	2,500,000
Extension of plan term				10 years
Unrecognized compensation costs related to nonvested awards					$ 9.8
Unrecognized compensation costs related to nonvested awards, weighted average period for recognition					1 year
Shares available for issuance under the Plan (in shares)					2,800,000
Stock options granted (in shares)					249,900	302,700
Options, Additional Disclosures:
Options exercised, aggregate intrinsic value					$ 1.3
Performance Shares
Share-based Compensation, Aggregate Disclosures:
Share grants in period (in shares)		79,070
Restricted Stock Units (RSUs) & Stock Options
Share-based Compensation, Aggregate Disclosures:
Share grants in period (in shares)		73,636
Stock Options
Share-based Compensation, Aggregate Disclosures:
Stock options granted (in shares)		249,875
Stock options granted, exercise price (in USD per share)		$ 39.98
Restricted Stock Units (RSUs)
Share-based Compensation, Aggregate Disclosures:
Share grants in period (in shares)		907			179,700	220,300
Restricted Stock Units (RSUs) \| Director [Member]
Share-based Compensation, Aggregate Disclosures:
Share grants in period (in shares)	3,732
Number of securities into which each RSU may be converted	1
Long-term Equity Incentive Plan, 2005
Share-based Compensation, Aggregate Disclosures:
Number of shares authorized for grant under 2005 Long-Term Equity Incentive Plans (in shares)			5,000,000.0
Number of additional shares authorized (in shares)				1,800,000
Long-term Incentive Plan, 2020
Share-based Compensation, Aggregate Disclosures:
Common Stock, Capital Shares Reserved for Future Issuance	2,827,210
Number of new shares for future issuance under 2020 Long-Term Incentive Plans (in shares)	2,000,000
Number of unissued shares reserved for 2020 Long-Term Incentive Plans (in shares)	827,210