INTEREST EXPENSE (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Interest expense, debt	$ 21,136,000	$ 25,709,000	$ 78,529,000	$ 78,526,000
Amortization of capitalized debt issuance costs	902,000	4,667,000	3,192,000	12,835,000
Amortization of debt issuance discount and premium, net	1,821,000	2,116,000	5,344,000	4,084,000
Total debt related expenses	2,723,000	6,783,000	8,536,000	16,919,000
Total interest expense	23,859,000	32,492,000	87,065,000	95,445,000
Interest Paid, Net			(87,200,000)	(83,900,000)
Interest on Senior Notes [Member]
Interest expense, debt	17,733,000	21,223,000	68,146,000	62,396,000
Interest on Convertible Notes [Member]
Interest expense, debt	3,263,000	3,444,000	9,938,000	11,919,000
Interest on capital leases and other financing arrangements [Member]
Interest expense, debt	$ 140,000	$ 1,042,000	$ 445,000	$ 4,211,000