Number of stock options that will expire in term 1.

No definition available.

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- Definition

Number of stock options that will expire in term 2.

+ References

No definition available.

+ Details

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- Definition

Represents the number of equal annual allotments in which awards will vest.

+ References

No definition available.

+ Details

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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.

+ References

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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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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).

+ References

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)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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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.

+ References

No definition available.

+ Details

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- Definition

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

+ References

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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

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)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Stock-Based Compensation (Details)			1 Months Ended		3 Months Ended		6 Months Ended
Stock-Based Compensation (Details)	Sep. 01, 2019 item $ / shares shares	Sep. 01, 2018 shares	Feb. 29, 2020 shares	Aug. 31, 2019 shares	Feb. 29, 2020 shares	Aug. 31, 2019 shares	Feb. 29, 2020 shares	Feb. 28, 2019 shares
Restricted stock
Stock-Based Compensation
Shares forfeited							2,694
Restricted stock \| Non-employee members of BOD
Stock-Based Compensation
Shares granted			4,906
Vesting period			12 years
Time-based restricted stock \| Executive officers \| Equity Retention Agreement \| August 31, 2022 vesting date
Stock-Based Compensation
Shares granted	15,945
Stock options \| Executive officers \| Equity Retention Agreement \| August 31, 2022 vesting date
Stock-Based Compensation
Shares granted	53,642
Exercise price (in dollars per share) \| $ / shares	$ 100.22
2018 LTIP \| Performance and service based restricted stock \| Executive officers and other members of management \| August 31, 2021 vesting date
Stock-Based Compensation
Shares granted		6,609
2019 LTIP \| Restricted stock
Stock-Based Compensation
Shares forfeited				833
2019 LTIP \| Performance and service based restricted stock \| Executive officers and other members of management \| August 31, 2021 vesting date
Stock-Based Compensation
Shares granted								211
2019 LTIP \| Time-based restricted stock \| Executive officers and other members of management \| August 31, 2021 vesting date
Stock-Based Compensation
Shares granted						132
2020 LTIP \| Restricted stock \| Non-executive members of management \| December 31 2021 vesting date
Stock-Based Compensation
Shares granted					18,720
2020 LTIP \| Restricted stock \| Non-executive members of management \| December 31 2022 vesting date
Stock-Based Compensation
Shares granted					616
2020 LTIP \| Restricted stock \| Non-executive members of management \| December 31 2024 vesting date
Stock-Based Compensation
Shares granted					432
2020 LTIP \| Performance and service based restricted stock \| Executive officers and other members of management \| August 31, 2022 vesting date
Stock-Based Compensation
Shares granted	3,697
2020 LTIP \| Time-based restricted stock \| Executive officers and other members of management \| August 31, 2022 vesting date
Stock-Based Compensation
Shares granted	3,689
2020 LTIP \| Stock options \| Executive officers and other members of management
Stock-Based Compensation
Weighted Average Exercise Price (in dollars per share) \| $ / shares	$ 100.22
Number of equal annual allotments in which awards will vest \| item	3
Stock options expiring earlier (in shares)	6,218
Stock options expiring later (in shares)	7,200
Shares authorized	13,418