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.

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)
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+ 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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Stock-Based Compensation (Details 4) - shares shares in Thousands	1 Months Ended		6 Months Ended
	May 31, 2019	Feb. 28, 2019	Jun. 30, 2019
Nonvested share units
Stock-based compensation
Shares granted (in shares)			142
Time-Based \| Nonvested shares
Stock-based compensation
Shares granted (in shares)			90
Employee \| Incentive Program Bonus Award Fiscal Year Performance \| Time-Based \| Nonvested share units
Stock-based compensation
Award vesting period		3 years
Employee \| First Vesting Period \| Incentive Program Bonus Award Fiscal Year Performance \| Time-Based \| Nonvested share units
Stock-based compensation
Vesting (as a percent)		33.33%
Employee \| Second Vesting Period \| Incentive Program Bonus Award Fiscal Year Performance \| Time-Based \| Nonvested share units
Stock-based compensation
Vesting (as a percent)		33.33%
Employee \| Third Vesting Period \| Incentive Program Bonus Award Fiscal Year Performance \| Time-Based \| Nonvested share units
Stock-based compensation
Vesting (as a percent)		33.33%
Maximum \| Director \| Time-Based \| Nonvested share units
Stock-based compensation
Award vesting period	1 year