Debt (Tables)

9 Months Ended

Sep. 30, 2012

Debt [Abstract]

Long-term debt

	September 30, 2012			December 31, 2011
Credit Agreement:
Term loan, mandatory principal payments during term, with remaining principal balance due December 2015, interest at adjusted LIBOR plus 3.75% (combined rate of 4.15% at September 30, 2012 and 4.30% at December 31, 2011)	$	168,000		$	190,000
$100 million revolving loan facility, due December 2015, interest at adjusted LIBOR plus applicable margin		—			—
Convertible Debt Securities:
2010 Convertible Notes – senior subordinated convertible notes; due March 1, 2017; cash interest at 3.0%; net of unamortized original issue discount (“OID”) of $26,576 and $30,256, respectively		123,424			119,744
		291,424			309,744
Current portion of long-term debt, net		(20,500	)		(27,000	)
Total long-term debt, net	$	270,924		$	282,744