Share based compensation arrangement by share based payment award fair value assumptions expected forfeitures.

No definition available.

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- Definition

Represents the sub-optimal exercise factor.

+ References

No definition available.

+ Details

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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+ Details

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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+ Details

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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Note 15 - Stock-based Compensation - Fair Value of Stock-based Award Using Exercise Multiple-based Lattice SAR Pricing Model Assumptions (Details)					12 Months Ended
	Nov. 08, 2017	Aug. 04, 2017	Nov. 08, 2016	Jun. 13, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Risk-free interest rate					1.90%	1.30%	1.40%
Expected life (in years) (Year)					3 years 36 days	4 years 182 days	4 years
Dividend yield					0.62%	1.10%	0.70%
Expected volatility					27.20%	30.70%	29.20%
Forfeiture rate					0.00%	8.40%	0.00%
Stock Appreciation Rights (SARs) [Member]
Risk-free interest rate		1.74%
Expected life (in years) (Year)		5 years
Dividend yield		0.66%
Expected volatility		26.30%
Forfeiture rate		10.30%
Sub-optimal Exercise Factor		2
Stock Appreciation Rights (SARs) [Member] \| Senior Management and Other Employees [Member]
Risk-free interest rate				1.29%
Expected life (in years) (Year)				6 years
Dividend yield				1.14%
Expected volatility				30.70%
Stock Appreciation Rights (SARs) [Member] \| Directors [Member]
Risk-free interest rate			1.65%
Expected life (in years) (Year)			7 years
Dividend yield			1.10%
Expected volatility			30.60%
Forfeiture rate			0.00%
Sub-optimal Exercise Factor			2.5
Stock Appreciation Rights (SARs) [Member] \| Senior Management [Member]
Forfeiture rate				0.00%
Sub-optimal Exercise Factor				2.5
Stock Appreciation Rights (SARs) [Member] \| Other Employees [Member]
Forfeiture rate				10.50%
Sub-optimal Exercise Factor				2
Employee Stock Option [Member] \| Director [Member]
Risk-free interest rate		2.08%
Expected life (in years) (Year)		7 years
Dividend yield		0.69%
Expected volatility		29.40%
Forfeiture rate		0.00%
Sub-optimal Exercise Factor		2.5
SARs and RSUs [Member] \| Directors and Senior Management [Member]
Risk-free interest rate	2.10%
Expected life (in years) (Year)	6 years
Dividend yield	0.60%
Expected volatility	26.90%
Forfeiture rate	0.00%
Sub-optimal Exercise Factor	2.5