INTEREST EXPENSE (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Interest expense, debt	$ 21,725,000	$ 29,033,000
Amortization of capitalized debt issuance costs	4,244,000	1,144,000
Amortization of debt issuance discount and premium, net	1,952,000	1,836,000
Total debt related expenses	6,196,000	2,980,000
Total interest expense	27,921,000	32,013,000
Interest Paid, Net	22,100,000	36,400,000
Interest on Senior Notes [Member]
Interest expense, debt	18,275,000	25,485,000
Interest on Convertible Notes [Member]
Interest expense, debt	3,263,000	3,412,000
Interest on capital leases and other financing arrangements [Member]
Interest expense, debt	$ 187,000	$ 136,000