Represents the number of equal installments commencing one year from date of grant over which the stock options vest.

No definition available.

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- Definition

The weighted average grant-date fair value of options and stock-settled appreciation rights granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

No definition available.

+ Details

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- Definition

The quantity of shares issuable on stock options and stock-settled appreciation rights granted during the reporting period.

+ References

No definition available.

+ Details

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&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://www.xbrl.org/2003/role/presentationRef
-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=96867065&loc=d3e5070-113901

+ Details

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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

Percentage of vesting of share-based compensation awards.

+ References

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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- Details

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- Details

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- Details

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Stock-Based Compensation Programs (Details)	1 Months Ended			3 Months Ended		6 Months Ended
Stock-Based Compensation Programs (Details)	Jan. 31, 2018 $ / shares shares	Apr. 30, 2017 $ / shares	Jan. 31, 2017 $ / shares	Mar. 31, 2018 shares	Mar. 31, 2017 shares	Jun. 30, 2018 installment
Stock option and SSARs
Stock-Based Compensation Programs
Number of equal installments commencing one year from the date of grant \| installment						4
Vesting period						1 year
Expiration period of options						10 years
Granted (in shares)	2,100,000
Weighted average fair value at grant date (in dollars per share) \| $ / shares	$ 9.07	$ 7.21	$ 8.54
PCEQs
Stock-Based Compensation Programs
Vesting period						3 years
Granted (in shares)				261,174	237,452
PCEQs \| Minimum
Stock-Based Compensation Programs
Percent of participant PCEQ award assigned that determines the number of shares available at vesting date				0.00%	0.00%
PCEQs \| Maximum
Stock-Based Compensation Programs
Percent of participant PCEQ award assigned that determines the number of shares available at vesting date				200.00%	200.00%