Amount of costs incurred to date for the specified type of restructuring cost.

Amount expected to be charged against earnings in the current and future periods for the specified restructuring cost.

Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References+ Details

Restructuring - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011 2011 Restructuring Plan Facilities Related	Dec. 31, 2012 2013 restructuring plan	Dec. 31, 2011 APAC, Latin America, Russia and United Kingdom 2011 Restructuring Plan	Dec. 31, 2010 United States APAC Latin America And United Kingdom Office 2010 Restructuring Plan	Dec. 31, 2010 San Francisco 2010 Restructuring Plan Facilities Related
Restructuring Cost and Reserve [Line Items]
Restructuring charge	$ 1,371		$ 96		$ 548	$ 1,581	$ 1,854
Restructuring liability	4	887
Forecasted restructuring charges				$ 450