Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Measurements [Abstract]

Schedule Of Company's Financial Assets And (Liabilities) At Fair Value On A Recurring Basis

	Basis of Fair Value Measurements
	Balance at Sept 30,  2011			Level 1		Level 2			Level 3
	(In thousands)
Money market investment	$	15,205		$	15,205	$	—		$	—
Available for sale securities		2,487			2,487		—			—
Contingent consideration		(2,707	)		—		—			(2,707	)
Interest rate agreements		(36,840	)		—		(36,840	)		—
	Basis of Fair Value Measurements
	Balance at December 31, 2010			Level 1		Level 2			Level 3
	(In thousands)
Money market investment	$	96,730		$	96,730	$	—		$	—
Interest rate agreements		(2,328	)		—		(2,328	)		—
Foreign currency contracts		176			—		176			—