Convertible Debt (Tables)

12 Months Ended

Dec. 31, 2012

Debt Disclosure [Abstract]

Key Components of Convertible Debt

The following table represents the key components of our interest expense on convertible debt (table in thousands):

	For the Twelve Months Ended
	2012		2011		2010
Contractual interest expense on the coupon	$	29,908	$	57,646	$	60,375
Amortization of the discount component recognized as interest expense	60,633		115,904		114,481
Total interest expense on the convertible debt	$	90,541	$	173,550	$	174,856