Summary of Accrued Liability Associated with Company's Exit Plans (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Fourth Quarter 2011 Exit Plan [Member] | EMEA [Member]
Beginning Accrual	$ 3,890				$ 5,060
Changes (reversal) of exit or dispodal activities and related charges	163	[1]			1,176	[2]
Cash Payments	(2,907)				(4,998)
Other Non-Cash Changes	(10)	[3]			(102)	[3]
Ending Accrual	1,136				1,136
Short-term	1,136	[4]			1,136	[4]
Long-term		[5]				[5]
Lease obligations and facility exit costs [Member] | Fourth Quarter 2011 Exit Plan [Member] | Americas [Member]
Beginning Accrual	598
Changes (reversal) of exit or dispodal activities and related charges	418	[6]			1,074	[7]
Cash Payments	(281)				(339)
Other Non-Cash Changes		[3]
Ending Accrual	735				735
Short-term	148	[4]			148	[4]
Long-term	587	[5]			587	[5]
Lease obligations and facility exit costs [Member] | Fourth Quarter 2011 Exit Plan [Member] | EMEA [Member]
Beginning Accrual	565				577
Changes (reversal) of exit or dispodal activities and related charges		[1]				[2]
Cash Payments	(5)				(5)
Other Non-Cash Changes	8	[3]			(4)	[3]
Ending Accrual	568				568
Short-term	568	[4]			568	[4]
Long-term		[5]				[5]
Lease obligations and facility exit costs [Member] | Fourth Quarter 2010 Exit Plan [Member]
Beginning Accrual	656		1,652		835		1,711
Changes (reversal) of exit or dispodal activities and related charges							523	[8]
Cash Payments	(66)		(8)		(229)		(671)
Other Non-Cash Changes	5	[3]	(93)	[3]	(11)	[3]	(12)	[3]
Ending Accrual	595		1,551		595		1,551
Short-term	419	[4]	1,010		419	[4]	1,010
Long-term	176	[5]	541		176	[5]	541
Lease obligations and facility exit costs [Member] | ICT Restructuring Plan [Member]
Beginning Accrual			507				1,462
Changes (reversal) of exit or dispodal activities and related charges				[3]			(262)	[9]
Cash Payments			(28)				(721)
Other Non-Cash Changes			(13)				(13)	[3]
Ending Accrual			466				466
Short-term			466				466
Long-term
Lease obligations and facility exit costs [Member] | Third Quarter 2010 Exit Plan [Member]
Beginning Accrual	2,755		5,049		3,427		6,141
Changes (reversal) of exit or dispodal activities and related charges							249	[8]
Cash Payments	(146)		(627)		(818)		(1,973)
Other Non-Cash Changes		[3]		[3]		[3]	5	[3]
Ending Accrual	2,609		4,422		2,609		4,422
Short-term	510	[4]	1,589		510	[4]	1,589
Long-term	2,099	[5]	2,833		2,099	[5]	2,833
Severance and Related Costs [Member] | Fourth Quarter 2011 Exit Plan [Member] | EMEA [Member]
Beginning Accrual	3,320				4,470
Changes (reversal) of exit or dispodal activities and related charges	151	[1]			1,093	[2]
Cash Payments	(2,886)				(4,898)
Other Non-Cash Changes	(17)	[3]			(97)	[3]
Ending Accrual	568				568
Short-term	568	[4]			568	[4]
Long-term		[5]				[5]
Legal-related costs [Member] | Fourth Quarter 2011 Exit Plan [Member] | EMEA [Member]
Beginning Accrual	5				13
Changes (reversal) of exit or dispodal activities and related charges	12	[1]			83	[2]
Cash Payments	(16)				(95)
Other Non-Cash Changes	(1)	[3]			(1)	[3]
Ending Accrual
Short-term		[4]				[4]
Long-term		[5]				[5]

[1] During the three months ended September 30, 2012, the Company recorded additional severance and related costs and legal-related costs, which are included in "General and administrative" costs in the accompanying Condensed Consolidated Statement of Operations.

[2] During the nine months ended September 30, 2012, the Company recorded additional severance and related costs and legal-related costs.

[3] Effect of foreign currency translation.

[4] Included in "Other accrued expenses and current liabilities" in the accompanying Condensed Consolidated Balance Sheet.

[5] Included in "Other long-term liabilities" in the accompanying Condensed Consolidated Balance Sheet.

[6] During the three months ended September 30, 2012, the Company recorded additional charges due to a change in estimate in lease obligations and facility exit costs, which are included in "General and administrative" costs in the accompanying Condensed Consolidated Statement of Operations.

[7] During the nine months ended September 30, 2012, the Company recorded additional lease obligations and facility exit costs, which are included in "General and administrative" costs in the accompanying Condensed Consolidated Statement of Operations.

[8] During the nine months ended September 30, 2011, the Company recorded additional lease termination costs, which are included in "General and administrative" costs in the accompanying Condensed Consolidated Statement of Operations.

[9] During the nine months ended September 30, 2011, the Company reversed accruals related to the final settlement of termination costs, which reduced "General and administrative" costs in the accompanying Condensed Consolidated Statement of Operations.