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GAIN (LOSS) ON NOTE REPURCHASE (Details) (USD $)	3 Months Ended	12 Months Ended			1 Months Ended			3 Months Ended		12 Months Ended
GAIN (LOSS) ON NOTE REPURCHASE (Details) (USD $)	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Oct. 31, 2010 Senior Unsecured Notes 8 Percent [Member]	Jul. 31, 2010 Senior Unsecured Notes 8 Percent [Member]	Jun. 30, 2010 Senior Unsecured Notes 8 Percent [Member]	Mar. 31, 2011 Senior Unsecured Notes 8 Percent [Member]	Mar. 31, 2009 Senior Unsecured Notes 8 Percent [Member]	Dec. 31, 2011 Senior Unsecured Notes 8 Percent [Member]	Dec. 31, 2010 Senior Unsecured Notes 8 Percent [Member]	Dec. 31, 2009 Senior Unsecured Notes 8 Percent [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Gain (loss) on senior note repurchase	$ 11,400,000	$ 0	$ (14,573,000)	$ 1,398,000						$ 0	$ (14,573,000)	$ 1,400,000
Extinguishment of Debt, Amount					138,900,000	6,500,000	47,400,000	1,100,000	6,200,000		192,700,000
Debt Instrument, Interest Rate, Stated Percentage							8.00%			8.00%
Debt Extinguishment Costs, Early Tender Premium											13,000,000
Write off of Deferred Debt Issuance Cost											1,200,000
Debt Extinguishment Costs, Other Fees											400,000
Repayments of Long-term Debt												$ 4,800,000

Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment.

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.