STOCK PLANS (RSUs and PSUs) (Details)	12 Months Ended
	Dec. 31, 2016 $ / 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	221,532
Shares granted | shares	188,635
Shares vested (in shares) | shares	(25,891)
Shares forfeited | shares	(7,492)
Balance at end of year (in shares) | shares	376,784
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)	$ 59.10
Shares granted, weighted average grant date fair value (in dollars per share)	58.33
Shares vested, weighted average grant date fair value (in dollars per share)	43.83
Shares forfeited, weighted average grant date fair value (in dollars per share)	60.28
Balance at end of year, weighted average grant date fair value (in dollars per share)	59.75
Performance Shares [Member]
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)	$ 58.14