STOCKHOLDERS' EQUITY - Assumptions Used in Fair Value Determination (Details)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock Options
Weighted Average Assumptions [Abstract]
Expected Volatility	26.80%	30.10%	34.40%
Expected Term (in years)	4 years 4 months 24 days	4 years 7 months 6 days	5 years
Risk-Free Interest Rate	2.60%	1.80%	1.20%
Dividend Yield	0.60%	0.50%	0.50%
Vesting period	3 years
Performance Shares \| Employee
Weighted Average Assumptions [Abstract]
Expected Volatility	27.00%	32.00%	32.00%
Risk-Free Interest Rate	2.40%	1.50%	0.88%
Dividend Yield	0.50%	0.60%	0.60%
Initial total shareholder return percentage	(10.50%)	8.20%	(6.60%)
Cliff vesting percentage	100.00%
Vesting period	3 years
Restricted Stock \| Non-employee Director
Weighted Average Assumptions [Abstract]
Vesting period	4 years
Minimum \| Restricted Stock \| Employee
Weighted Average Assumptions [Abstract]
Vesting period	3 years
Maximum \| Restricted Stock \| Employee
Weighted Average Assumptions [Abstract]
Vesting period	4 years

The initial percentage of total shareholder return.

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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.

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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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- 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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- Definition

Percentage of vesting of share-based compensation awards.

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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.

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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
-Subparagraph (f)(2)(i)
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-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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