Debt (Tables)

6 Months Ended

Jun. 30, 2012

Debt [Abstract]

Long-term debt

	June 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 4.22% at June 30, 2012 and 4.30% at December 31, 2011)	$	173,000		$	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 $27,827 and $30,256, respectively		122,173			119,744
		295,173			309,744
Current portion of long-term debt, net		(18,000	)		(27,000	)
Total long-term debt, net	$	277,173		$	282,744