Restructuring Reserves (Tables)

12 Months Ended

Dec. 31, 2011

2010 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring and Related Costs [Table Text Block]

A summary of the restructuring charges is as follows:

Description of charge	Initial Reserve		Cash Charges			Non-Cash Settlements			Impact of Changes in Exchange Rates		Balance, December 31, 2010		Adjustments to Reserves		Cash Charges			Non-Cash Settlements			Impact of Changes in Exchange Rates			Balance, December 31, 2011
Termination benefits	$	14,098	$	(13,246	)	$	—		$	89	$	941	$	826	$	(1,744	)	$	—		$	(16	)	$	7
Office closures and other restructuring	5,380		(1,760		)	(376		)	65		3,309		789		(892		)	$	(620	)	5			2,591
Total	$	19,478	$	(15,006	)	$	(376	)	$	154	$	4,250	$	1,615	$	(2,636	)	$	(620	)	$	(11	)	2,598

2009 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring and Related Costs [Table Text Block]

A summary of the restructuring charges is as follows:

Description of charge	Initial Reserve		Adjustments to Reserves			Cash Charges			Impact of Changes in Exchange Rates		Balance, December 31, 2010		Adjustments to Reserves		Cash Charges			Impact of Changes in Exchange Rates			Balance, December 31, 2011
Termination benefits	$	6,486	$	(63	)	$	(6,320	)	$	2	$	105	$	9	$	(111	)	$	(3	)	$	—
Office closures	—		—			—			—		—		—		—			—			—
Total	$	6,486	$	(63	)	$	(6,320	)	$	2	$	105	$	9	$	(111	)	$	(3	)	$	—