Convertible Debt (Tables)

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

Key Components of Convertible Debt

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

	For the Three Months Ended
	June 30, 2012		June 30, 2011
Contractual interest expense on the coupon	$	7,422	$	15,094
Amortization of the discount component recognized as interest expense	14,954		29,959
Total interest expense on the convertible debt	$	22,376	$	45,053

	For the Six Months Ended
	June 30, 2012		June 30, 2011
Contractual interest expense on the coupon	$	14,945	$	30,188
Amortization of the discount component recognized as interest expense	29,654		59,322
Total interest expense on the convertible debt	$	44,599	$	89,510