Activity and Liability Balances Recorded as part of Global Operations Strategy Initiatives and Reorganization and Reinvestment Initiatives as well as Current Estimated Future Charges Relating Initiatives (Detail) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended	3 Months Ended				6 Months Ended	3 Months Ended
	Jun. 30, 2011 Global Operations Strategy	Jun. 30, 2011 Global Operations Strategy	Dec. 31, 2011 Global Operations Strategy	Jun. 30, 2012 Global Operations Strategy Workforce Reductions	Mar. 31, 2012 Global Operations Strategy Workforce Reductions	Mar. 31, 2012 Global Operations Strategy Transition Costs	Jun. 30, 2012 Reorganization and Reinvestment Initiatives	Jun. 30, 2012 Reorganization and Reinvestment Initiatives	Jun. 30, 2012 Reorganization and Reinvestment Initiatives Workforce Reductions	Mar. 31, 2012 Reorganization and Reinvestment Initiatives Workforce Reductions	Jun. 30, 2012 Global Operations Strategy, Reorganization and Reinvestment Initiatives	Mar. 31, 2012 Global Operations Strategy, Reorganization and Reinvestment Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring payable, beginning balance				$ 660,000	$ 1,219,000	$ 55,000			$ 2,442,000	$ 5,357,000	$ 3,102,000	$ 6,631,000
Charges to cost and expense	5,813,000	12,342,000	39,496,000			21,000	283,000	720,000	283,000	442,000	283,000	463,000
Cash payments				(159,000)	(559,000)	(76,000)			(1,675,000)	(3,357,000)	(1,834,000)	(3,992,000)
Restructuring payable, ending balance				501,000	660,000				1,050,000	2,442,000	1,551,000	3,102,000
Total future estimated charges, at end of period								$ 183,000	$ 183,000		$ 183,000