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CONVERTIBLE SENIOR NOTES (Tables)

9 Months Ended

Sep. 30, 2012

CONVERTIBLE SENIOR NOTES

Schedule of carrying amounts of the liability and equity components of the convertible notes

		September 30, 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		15,274			18,619
Net carrying amount of the liability component		109,726			106,381

Schedule of effective interest rate, cash and non-cash interest expense and deferred financing cost amortization

		Three Months Ended September 30,						Nine Months Ended September 30,
		2012			2011			2012			2011
Effective interest rate on liability component		10.0		%	10.0		%	10.0		%	10.0		%
Cash interest expense recognized		$	1,580		$	1,584		$	4,696		$	4,677
Non-cash interest expense recognized		1,158			1,046			3,345			2,999
Non-cash deferred financing amortization costs included in interest expense		181			181			540			538

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Tabular disclosure of the details of the effective interest rate, interest expense and discount amortization related to convertible notes of the entity as well as deferred financing cost amortization.

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Tabular disclosure of information about the debt and equity components of convertible debt instruments.

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