STOCKHOLDERS' EQUITY (Details 5) (USD $)	1 Months Ended	12 Months Ended
	Aug. 31, 2009 W	Dec. 31, 2011 Y	Dec. 31, 2010 Y	Dec. 31, 2009 Y	Dec. 31, 2008
Stock options outstanding and exercisable by exercise price range
Aggregate exercise price		$ 19,340,000	$ 22,498,000	$ 3,263,000
Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 1.68	$ 1.68	$ 1.68	$ 1.68
Exercise price, high end of range (in dollars per share)		$ 10.01	$ 14.94	$ 24.44	$ 24.44
Options Outstanding - Number of Shares		8,217,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		5.48
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 4.26	$ 4.35	$ 4.38	$ 5.54
Options Outstanding - Aggregate Intrinsic Value		31,565,000
Options Exercisable - Number of Shares		6,420,000	8,500,000	11,100,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		5.21
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 4.22
Options Exercisable - Aggregate Intrinsic Value		24,712,000
Options exercised (in shares)		4,300,000	5,300,000	1,200,000
Total intrinsic value of options exercised		42,000,000	24,800,000	1,500,000
Aggregate exercise price		19,300,000	22,500,000	3,300,000
Minimum exercise price under exchange offer (in dollars per share)	$ 4.69
Basis period for exercise price under exchange offer (in weeks)	52
Stock options exchanged (in shares)	9,500,000
Number of stock options for which stock options were exchanged (in shares)	1,400,000
Assumptions used to estimate the fair value of each stock option grant
Risk-free interest rate (as a percent)			2.05%	2.38%
Expected life (in years)			5.54	5.58
Expected volatility (as a percent)			54.00%	55.00%
Weighted-average estimated fair value of options granted (in dollars per share)			$ 2.70	$ 2.25
Unearned stock-based compensation expense related to non-vested awards		5,100,000
Weighted-average period of recognition of unearned compensation expense of non-vested awards (in years)		1.6
Restricted Stock Units, Performance and Non Performance - Based
Stock options outstanding and exercisable by exercise price range
Number of restricted stock units granted in exchange of stock options (in shares)	2,300,000
Assumptions used to estimate the fair value of each stock option grant
Unearned stock-based compensation expense related to non-vested awards		177,900,000	127,100,000	73,300,000
Weighted-average period of recognition of unearned compensation expense of non-vested awards (in years)		2.8	3.2	3.0
Range of Exercise Price 1 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 1.68
Exercise price, high end of range (in dollars per share)		$ 3.24
Options Outstanding - Number of Shares		981,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		3.95
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 2.73
Options Outstanding - Aggregate Intrinsic Value		5,270,000
Options Exercisable - Number of Shares		905,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		3.76
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 2.69
Options Exercisable - Aggregate Intrinsic Value		4,901,000
Range of Exercise Price 2 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 3.26
Exercise price, high end of range (in dollars per share)		$ 3.29
Options Outstanding - Number of Shares		512,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		3.62
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 3.28
Options Outstanding - Aggregate Intrinsic Value		2,465,000
Options Exercisable - Number of Shares		505,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		3.58
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 3.28
Options Exercisable - Aggregate Intrinsic Value		2,432,000
Range of Exercise Price 3 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 3.32
Exercise price, high end of range (in dollars per share)		$ 3.32
Options Outstanding - Number of Shares		1,090,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		6.21
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 3.32
Options Outstanding - Aggregate Intrinsic Value		5,210,000
Options Exercisable - Number of Shares		1,005,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		6.19
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 3.32
Options Exercisable - Aggregate Intrinsic Value		4,803,000
Range of Exercise Price 4 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 3.41
Exercise price, high end of range (in dollars per share)		$ 4.20
Options Outstanding - Number of Shares		926,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		6.66
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 4.13
Options Outstanding - Aggregate Intrinsic Value		3,676,000
Options Exercisable - Number of Shares		592,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		6.58
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 4.12
Options Exercisable - Aggregate Intrinsic Value		2,358,000
Range of Exercise Price 5 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 4.23
Exercise price, high end of range (in dollars per share)		$ 4.40
Options Outstanding - Number of Shares		820,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		4.95
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 4.25
Options Outstanding - Aggregate Intrinsic Value		3,157,000
Options Exercisable - Number of Shares		332,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		5.12
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 4.27
Options Exercisable - Aggregate Intrinsic Value		1,224,000
Range of Exercise Price 6 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 4.43
Exercise price, high end of range (in dollars per share)		$ 4.43
Options Outstanding - Number of Shares		1,000,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		7.71
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 4.43
Options Outstanding - Aggregate Intrinsic Value		3,670,000
Options Exercisable - Number of Shares		413,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		7.71
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 4.43
Options Exercisable - Aggregate Intrinsic Value		1,516,000
Range of Exercise Price 7 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 4.56
Exercise price, high end of range (in dollars per share)		$ 4.89
Options Outstanding - Number of Shares		1,528,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		5.19
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 4.82
Options Outstanding - Aggregate Intrinsic Value		5,013,000
Options Exercisable - Number of Shares		1,443,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		5.01
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 4.82
Options Exercisable - Aggregate Intrinsic Value		4,729,000
Range of Exercise Price 8 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 4.92
Exercise price, high end of range (in dollars per share)		$ 5.75
Options Outstanding - Number of Shares		826,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		4.79
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 5.39
Options Outstanding - Aggregate Intrinsic Value		2,234,000
Options Exercisable - Number of Shares		826,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		5.01
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 5.39
Options Exercisable - Aggregate Intrinsic Value		2,111,000
Range of Exercise Price 9 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 5.96
Exercise price, high end of range (in dollars per share)		$ 8.89
Options Outstanding - Number of Shares		520,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		4.97
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 6.38
Options Outstanding - Aggregate Intrinsic Value		870,000
Options Exercisable - Number of Shares		396,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		4.57
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 6.42
Options Exercisable - Aggregate Intrinsic Value		$ 638,000
Range of Exercise Price 10 | Stock Options
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)		$ 10.01
Exercise price, high end of range (in dollars per share)		$ 10.01
Options Outstanding - Number of Shares		14,000
Options Outstanding - Weighted Average Remaining Contractual Term (in years)		8.88
Options Outstanding - Weighted Average Exercise Price (in dollars per share)		$ 10.01
Options Exercisable - Number of Shares		3,000
Options Exercisable - Weighted Average Remaining Contractual Term (in years)		8.88
Options Exercisable - Weighted Average Exercise Price (in dollars per share)		$ 10.01