STOCK-BASED COMPENSATION PLANS (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Options Outstanding
Number of options outstanding (in shares)	317,270	298,520
Weighted Average Remaining Contractual Life	3 years 4 months 28 days
Weighted Average Exercise price (in dollars per share)	$ 24.60	$ 25.90
Options Exercisable
Number of Options Exercisable (in shares)	288,186
Weighted Average Exercise Price (in dollars per share)	$ 26.30
1995 Stock Incentive Plan
Options Outstanding
Number of options outstanding (in shares)	183,406
Weighted Average Remaining Contractual Life	1 year 7 months 6 days
Weighted Average Exercise price (in dollars per share)	$ 13.10
Options Exercisable
Number of Options Exercisable (in shares)	183,406
Weighted Average Exercise Price (in dollars per share)	$ 13.10
2004 Employee Incentive Plan
Options Outstanding
Number of options outstanding (in shares)	40,741
Weighted Average Remaining Contractual Life	5 years 7 months 6 days
Weighted Average Exercise price (in dollars per share)	$ 34.50
Options Exercisable
Number of Options Exercisable (in shares)	36,657
Weighted Average Exercise Price (in dollars per share)	$ 37.20
2004 Directors' Plan
Options Outstanding
Number of options outstanding (in shares)	93,123
Weighted Average Remaining Contractual Life	6 years
Weighted Average Exercise price (in dollars per share)	$ 43.00
Options Exercisable
Number of Options Exercisable (in shares)	68,123
Weighted Average Exercise Price (in dollars per share)	$ 56.10