STOCK PLANS (RSUs and PSUs) (Details)	12 Months Ended
	Dec. 31, 2018 $ / shares shares
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Balance at beginning of year (in shares) | shares	418,966
Shares granted | shares	148,833
Shares vested (in shares) | shares	(49,653)
Shares forfeited | shares	(12,116)
Balance at end of year (in shares) | shares	506,030
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Balance at beginning of year, weighted average grant date fair value (in dollars per share) | $ / shares	$ 69.98
Shares granted, weighted average grant date fair value (in dollars per share) | $ / shares	89.51
Shares vested, weighted average grant date fair value (in dollars per share) | $ / shares	69.24
Shares forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	74.16
Balance at end of year, weighted average grant date fair value (in dollars per share) | $ / shares	$ 75.69
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares granted | shares	31,760
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Shares granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 76.20