STOCK PLANS (Summary of Restricted Stock Awards) (Details) (Restricted stock awards, USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Restricted stock awards
Shares
Balance at beginning of year (in shares)	336,808		379,233		523,730
Shares granted (in shares)	14,464		20,099		22,779
Shares vested (in shares)	(224,021)	[1]	(62,524)	[1]	(159,842)	[1]
Shares forfeited (in shares)	(11,935)		0		(7,434)
Balance at end of year (in shares)			336,808		379,233
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	115,316		318,088
Weighted Average Grant Date Fair Value
Balance at beginning of year, weighted average grant date fair value (in dollars per share)	$ 28.49		$ 28.06		$ 27.36
Shares granted, weighted average grant date fair value (in dollars per share)	$ 70.88		$ 47.81		$ 35.55
Shares vested, weighted average grant date fair value (in dollars per share)	$ 25.68	[1]	$ 32.10	[1]	$ 26.97	[1]
Shares forfeited, weighted average grant date fair value (in dollars per share)	$ 25.76		$ 0.00		$ 24.67
Balance at end of year, weighted average grant date fair value (in dollars per share)			$ 28.49		$ 28.06
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 39.55		$ 28.74

[1] Includes shares vested but not exercisable