STOCK-BASED COMPENSATION PLANS (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of changes in unvested restricted stock

The following is a summary of changes in unvested restricted stock:

	RSAs		Weighted-Average Price
Unvested shares at December 31, 2017	152,180		$	33.04
2018 Activity:
Granted	237,593		34.95
Vested	(101,385	)	32.66
Forfeited	(8,073	)	35.36
Unvested shares at December 31, 2018	280,315		$	34.73

Summary of SARS Activity

The following is a summary of the 2018 activity:

	SARs	Weighted- Average Price
Outstanding SARs at December 31, 2017	2,610,000	$	22.65
2018 Activity:
Granted	450,000	33.80
Outstanding SARs at December 31, 2018	3,060,000	$	24.29

Schedule of assumptions used to estimate the value of stock options under ESPP

Our SARs and stock options were valued using the Black-Scholes pricing model utilizing the following assumptions:

	2018		2017		2016
Risk-free interest rate	2.6	%	2.1	%	1.2% - 1.9%
Expected years to exercise	5 years		5 years		5 years
Expected volatility	36.2	%	37.0	%	37.5% - 42.1%
Annual dividend yield	2.1% - 2.2%		2.0	%	2.1	%