Long Term Debt (Tables)

12 Months Ended

Dec. 31, 2011

Debt Disclosure [Abstract]

Schedule of Long-term Debt

Long-term debt consists of the following at December 31,:

	2010		2011
Revolving line of credit	$	22,000	$	80,000
Term loan borrowings on senior credit facility	54,938		53,588
2.50% convertible senior subordinated notes	108,189		327
Mortgage notes	10,488		9,594
Total long-term debt	195,615		143,509
Less:  Current portion	110,433		54,557
	$	85,182	$	88,952

Schedule of Amounts Recognized Consolidated Balance Sheets

Amounts recognized in the consolidated balance sheets related to the Notes consist of the following at December 31,:

	2010			2011
Principal value of the Notes	$	112,093		$	327
Unamortized discount	(3,904		)	—
Carrying value of the Notes	$	108,189		$	327
Equity component	$	21,438		$	—

Schedule of Maturities of Long-term Debt

The scheduled  maturities  of  long-term  debt outstanding at December 31, 2011 are as follows:

2012	$	54,557
2013	1,050
2014	1,467
2015	81,234
2016	1,339
Thereafter	3,862