INTEREST EXPENSE

6 Months Ended

Jun. 30, 2011

Interest Expense [Abstract]

Interest Expense

INTEREST EXPENSE

Interest expense comprised the following for the three and six months ended June 30, 2011 and 2010:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2011		2010		2011		2010
Interest on Senior Notes	$	23,105	$	17,401	$	45,652	$	36,225
Interest on Convertible Notes	4,574		4,156		8,795		8,312
Interest on capital leases and other financing arrangements	701		2,815		1,694		4,984
	28,380		24,372		56,141		49,521
Amortization of capitalized debt issuance costs	1,451		1,402		3,427		2,783
Amortization of issuance discount on Convertible Notes	4,502		5,398		9,249		10,396
Loss on extinguishment of debt (1)	3,424		—		24,979		—
	9,377		6,800		37,655		13,179
Total interest expense	$	37,757	$	31,172	$	93,796	$	62,700

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