Restructuring and Other Special Charges - Additional Information (Detail) (Restructuring Actions)	12 Months Ended	9 Months Ended
Dec. 31, 2012 Restructuring Fiscal 2012 Plan Person	Sep. 30, 2013 Restructuring November 2012 Plan Person
Restructuring Cost and Reserve [Line Items]
Number of Associates notified	325	400
Voluntary Retirement	60
Number of Associates to be reduced from current work force	385

The expected number of positions to be eliminated as a result of restructuring activities.

No definition available.

Name:	us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration