Convertible Senior Notes Due 2017 (Tables)

3 Months Ended

Mar. 31, 2012

Convertible Senior Notes Due 2017 [Abstract]

Interest Expense Recorded And Expected To Be Recorded In Consolidated Statement Of Operations

	Interest at Coupon  Rate of 2.625%		Non-Cash Amortization of Debt Discount		Non-Cash Amortization of Debt Issuance Costs		Total Interest Expense
Actual interest expense for the three months ended March 31, 2012	$	226	$	357	$	2	$	585
Expected interest expense for:
Remainder of 2012	$	5,094	$	8,557	$	740	$	14,391
2013		6,792		12,409		1,033		20,234
2014		6,792		13,737		1,144		21,673
2015		6,792		15,207		1,266		23,265
2016		6,792		16,901		1,407		25,100
2017		1,699		4,487		374		6,560
Total	$	33,961	$	71,298	$	5,964	$	111,223