STOCK-BASED COMPENSATION PLANS (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Long Term Performance Share Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, shares granted	4,352
Stock based compensation, number of shares vested	6,797
Management Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, shares granted	7,801
Defined Contribution Retirement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, shares granted	2,304
Restricted Stock | Equity and Incentive Plan 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, option granted	6,325
Stock based compensation, option granted, grant date fair value	33.72