XML 72 R64.htm IDEA: XBRL DOCUMENT

Restructuring - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Jan. 31, 2012 Employee	Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]
Percentage of workforce reduced by company	33.00%
Number of employees remaining	115dei_EntityNumberOfEmployees
Restructuring-related costs		$ 3.9us-gaap_RestructuringCharges

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References+ Details