Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of tax benefit from exercise of stock options granted under share-based compensation 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 2A
-Subparagraph (a)
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- References

No definition available.

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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

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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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.

+ 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
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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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

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- Definition

Number of share options (or share units) exercised during the current 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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Stock Compensation (Details Textual) - USD ($)	12 Months Ended
Stock Compensation (Details Textual) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock Compensation Plans (Textuals) [Abstract]
Maximum number of common stock shares authorized for issuance under Plan	48,400,000
Shares available for future awards	9,100,000
Number of awards exercised	0
Tax benefit realized for the exercises of SARs	$ 0	$ 0	$ 0
Stock Appreciation Rights (SARs) [Member]
Stock Compensation Plans (Textuals) [Abstract]
Award vesting period	3 years
SARs expiration period	7 years
Total compensation cost to be recognized in future periods	$ 0
Number of awards exercised	0
Restricted Stock [Member]
Stock Compensation Plans (Textuals) [Abstract]
Award vesting period	3 years
Total compensation cost to be recognized in future periods	$ 23,000,000
Weighted average period over which remaining cost will be recognized	2 years 1 month
Performance-based equity awards [Member]
Stock Compensation Plans (Textuals) [Abstract]
Total compensation cost to be recognized in future periods	$ 4,300,000
Weighted average period over which remaining cost will be recognized	2 years 1 month
Performance-based equity awards [Member] \| Minimum
Stock Compensation Plans (Textuals) [Abstract]
Award vesting period	1 year 3 months
Performance-based equity awards [Member] \| Maximum
Stock Compensation Plans (Textuals) [Abstract]
Award vesting period	3 years 3 months