STOCK-BASED COMPENSATION (Details 2) (Stock Options, USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Shares
Outstanding at the beginning of the period (in shares)	125,564
Granted (in shares)	188,330	0
Exercised (in shares)	(1,832)
Expired (in shares)	(5,301)
Outstanding at the end of the period (in shares)	306,761
Exercisable at the end of the period (in shares)	118,431
Vested or expected to vest at the end of the period (in shares)	174,030
Weighted Average Remaining Contractual Terms
Outstanding at the end of the period	7 years
Exercisable at the end of the period	4 years 7 months 6 days
Vested or expected to vest at the end of the period	8 years 4 months 24 days
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 292.76
Granted (in dollars per share)	$ 33.72
Exercised (in dollars per share)	$ 21.25
Expired (in dollars per share)	$ 508.64
Outstanding at the end of the period (in dollars per share)	$ 131.62
Exercisable at the end of the period (in dollars per share)	$ 287.30
Vested or expected to vest at the end of the period (in dollars per share)	$ 33.72
Aggregate Intrinsic Value
Outstanding at the end of the period	$ 7.3
Exercisable at the end of the period	1.9
Vested or expected to vest at the end of the period	$ 5.0
Vesting period	3 years
Maximum
Aggregate Intrinsic Value
Expiration period	10 years