STOCK-BASED COMPENSATION Options(Details) (USD $)	12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010 years	Dec. 31, 2009	Dec. 31, 2008
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Aggregate Intrinsic Value, outstanding	$ 71,427,000
Aggregate Intrinsic Value, exercisable	71,427,000
Proceeds from exercise of stock options	242,000	591,000	0
Operating Loss Carry foward Exercise Stock Options	96,691,000	90,532,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, outstanding	2,901,687	2,539,062	2,000,750	1,439,042
Weighted Average Exercise Price per Share, outstanding	$ 32.86	$ 35.44	$ 39.59	$ 50.81
Weighted Average Remaining Contractual Term (years), outstanding	4.49	4.95
Aggregate Intrinsic Value, outstanding	71,000	2,189,000
Shares, granted	555,000	720,000	691,875
Weighted Average Exercise Price per Share, granted	$ 22.33	$ 25.59	$ 18.68
Shares, exercised	(23,625)	(32,313)	0
Weighted Average Exercise Price per Share, exercised	$ 10.23	$ 18.31	$ 0.00
Shares, forfeited	(168,750)	(149,375)	(130,167)
Weighted Average Exercise Price per Share, forfeited	$ 40.17	$ 47.28	$ 52.48
Shares, Vested or expected to vest	2,778,007
Weighted Average Exercise Price per Share, Vested or expected to vest	$ 33.30
Weighted Average Remaining Contractual Term (years), Vested or expected to vest	4.38
Aggregate Intrinsic Value, Vested or expected to vest	71,000
Shares, exercisable	1,829,813
Weighted Average Exercise Price per Share, exercisable	$ 38.27
Weighted Average Remaining Contractual Term (years), exercisable	3.33
Aggregate Intrinsic Value, exercisable	71,000
Proceeds from exercise of stock options	200,000	600,000
Cash awards, instrinsic value	300,000	200,000
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	0	0
Unrecognized compensation expense related to potions	8,900,000
Recognized expense, weighted average period	1.1
Stock Options [Member] | DELAWARE
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	0	700,000
Operating Loss Carry foward Exercise Stock Options		5,200,000	7,400,000
Deferred Income Taxes and Tax Credits	$ 0	$ 100,000