Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2011

Prepaid Expense and Other Assets [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets are summarized as follows as of December 31, 2011 and 2010:

(in thousands)	2011		2010
Prepaid expenses	$	27,832	$	24,061
Amounts held in escrow in connection with acquisitions	7,026		27,006
Value added tax	9,488		7,039
Other receivables	14,709		6,296
	$	59,055	$	64,402