INTEREST EXPENSE

12 Months Ended

Dec. 31, 2011

Interest Expense [Abstract]

Interest Expense

INTEREST EXPENSE

Interest expense comprised the following for the years ended December 31, 2011, 2010 and 2009:

	For the Year Ended December 31,
	2011		2010		2009
Interest on Senior Notes	$	89,747	$	75,783	$	52,478
Interest on Convertible Notes	18,034		16,378		16,625
Interest on capital leases and other financing arrangements	4,167		9,040		8,169
	111,948		101,201		77,272
Amortization of capitalized debt issuance costs	6,226		5,706		9,565
Amortization of issuance discount on Convertible Notes	17,379		21,299		19,519
Loss on extinguishment of debt (1)	25,904		5,299		9,415
	49,509		32,304		38,499
Total interest expense	$	161,457	$	133,505	$	115,771

(1) See Note 5 “Long-Term Debt and Other Financing Arrangements” for detail of the loss on extinguishment of debt.