Convertible Notes, Long-Term Debt and Credit Facility (Tables)

9 Months Ended

Sep. 30, 2012

Convertible Notes, Long-Term Debt and Credit Facility [Abstract]

Components of convertible notes and long-term debt

	September 30, 2012			December 31, 2011
Convertible notes:
Convertible senior unsecured notes (2008 Notes)	$	55,500		$	70,500
Convertible senior secured notes (2010 Notes)		—			36,004
Less discount on notes		(1,438	)		(6,766	)
Convertible senior notes, net of discount		54,062			99,738
Less amount reported as current		(54,062	)		—
Convertible senior notes, less current portion	$	—		$	99,738
Long-term debt:
Capital lease obligations	$	1,890		$	1,642
Less current portion of long-term debt		(1,002	)		(767	)
Long-term debt, less current portion	$	888		$	875