INTEREST EXPENSE (Tables)

3 Months Ended

Mar. 31, 2013

Interest Expense [Abstract]

Schedule of Interest Expense

Interest expense comprised the following for the three months ended March 31, 2013 and 2012:

	For the Three Months Ended March 31,
	2013		2012
Interest on Senior Notes	$	25,485	$	21,192
Interest on Convertible Notes	3,412		4,397
Interest on capital leases and other financing arrangements	141		1,454
	29,038		27,043
Amortization of capitalized debt issuance costs	1,144		1,223
Amortization of debt issuance discount and premium, net	1,836		3,558
	2,980		4,781
Total interest expense	$	32,018	$	31,824