Debt (Tables)

9 Months Ended

Sep. 30, 2015

Debt

Schedule of components of convertible notes

The components of the convertible notes are as follows (in thousands):

				Carrying Amount,
	Interest Rates			September 30,		December 31,
Debt	September 30, 2015		Maturities	2015		2014
4.75% Convertible Senior Notes due 2015	4.75	%	2015	$	5	$	85,640
0.375% Convertible Senior Notes due 2018	0.375	%	2018		325,506		314,752
1.25% Convertible Senior Notes due 2020	1.25	%	2020		298,422		288,726
					623,933		689,118
Less current portion					5		85,640
				$	623,928	$	603,478

Schedule of carrying amount and fair value of convertible notes

The carrying amount and fair value of our convertible notes are as follows (in thousands):

	September 30, 2015				December 31, 2014
	Carrying				Carrying
	Amount		Fair Value		Amount		Fair Value
4.75% Convertible Senior Notes due 2015	$	5	$	57	$	85,640	$	755,143
0.375% Convertible Senior Notes due 2018		325,506		808,125		314,752		560,156
1.25% Convertible Senior Notes due 2020		298,422		813,982		288,726		577,736
	$	623,933	$	1,622,164	$	689,118	$	1,893,035