STOCK-BASED COMPENSATION (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012
Base Price - $ 26.49
Stock-based compensation
Base Price (in dollars per share)	$ 26.49
SARs Outstanding (in shares)	50,000
Remaining Life	1 year
Currently Exercisable (in shares)	50,000
Base Price - $ 41.05
Stock-based compensation
Base Price (in dollars per share)	$ 41.05
SARs Outstanding (in shares)	106,700
Remaining Life	3 years
Currently Exercisable (in shares)	106,700
Base Price - $ 48.60
Stock-based compensation
Base Price (in dollars per share)	$ 48.60
SARs Outstanding (in shares)	38,400
Remaining Life	4 years
Currently Exercisable (in shares)	38,400
Base Price - $ 45.70
Stock-based compensation
Base Price (in dollars per share)	$ 45.70
SARs Outstanding (in shares)	35,070
Remaining Life	4 years
Currently Exercisable (in shares)	35,070
Base Price - $ 43.46
Stock-based compensation
Base Price (in dollars per share)	$ 43.46
SARs Outstanding (in shares)	181,550
Remaining Life	5 years
Currently Exercisable (in shares)	181,550
Base Price - $ 48.05
Stock-based compensation
Base Price (in dollars per share)	$ 48.05
SARs Outstanding (in shares)	3,000
Remaining Life	5 years
Currently Exercisable (in shares)	3,000
Base Price - $ 41.12
Stock-based compensation
Base Price (in dollars per share)	$ 41.12
SARs Outstanding (in shares)	2,500
Remaining Life	5 years
Currently Exercisable (in shares)	2,500
Base Price - $ 38.59
Stock-based compensation
Base Price (in dollars per share)	$ 38.59
SARs Outstanding (in shares)	303,100
Remaining Life	6 years
Currently Exercisable (in shares)	303,100
Base Price - $ 3.50
Stock-based compensation
Base Price (in dollars per share)	$ 3.50
SARs Outstanding (in shares)	629,608
Remaining Life	7 years
Currently Exercisable (in shares)	629,608
Base Price - $ 17.48
Stock-based compensation
Base Price (in dollars per share)	$ 17.48
SARs Outstanding (in shares)	8,000
Remaining Life	8 years
Currently Exercisable (in shares)	5,333
Base Price - $ 18.36
Stock-based compensation
Base Price (in dollars per share)	$ 18.36
SARs Outstanding (in shares)	283,239
Remaining Life	8 years
Currently Exercisable (in shares)	181,888