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CONVERTIBLE SENIOR NOTES

3 Months Ended

Mar. 31, 2012

10 — CONVERTIBLE SENIOR NOTES

The Company issued $125,000 of 5.0% Convertible Senior Notes on July 27, 2010 (the “2010 Notes”). The Indenture includes customary agreements and covenants by the Company, including with respect to events of default.

The following tables provide additional information about the Company’s 2010 Notes:

	March 31, 2012		December 31, 2011
Carrying amount of the equity component (additional paid-in capital)	$	24,375	$	24,375
Principal amount of the 2010 Notes	125,000		125,000
Unamortized discount of the liability component	17,529		18,619
Net carrying amount of the liability component	107,471		106,381

	Three Months Ended March 31,
	2012			2011
Effective interest rate on liability component	9.9		%	9.9		%
Cash interest expense recognized	$	1,562		$	1,531
Non-cash interest expense recognized	1,091			967
Deferred financing cost amortization recognized as interest expense	179			177

The remaining period over which the unamortized discount will be recognized is 3.4 years. As of March 31, 2012, the if-converted value of the 2010 Notes does not exceed their principal amount.

Due to the 2015 maturity of the 2010 Notes and the Company’s intent to hold the 2010 Notes until maturity, the 2010 Notes have been classified as a noncurrent liability on the condensed consolidated balance sheet as of March 31, 2012 and December 31, 2011.