Multiemployer Pension Plans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Contributions	$ 6,162		$ 6,398		$ 6,027
Central States, Southeast and Southwest Areas Pension Fund
Defined Benefit Plan Disclosure [Line Items]
EIN/Pension Plan Number	36-6044243/001	[1]
Pension Protection Act Zone Status	Red	[1]	Red	[1]
FIP / RP Status Pending / Implemented	Implemented	[1]
Contributions	1,752	[1]	1,834	[1]	1,724	[1]
Surcharge Imposed	No	[1]
Expiration Dates of Collective Bargaining Agreements, First	Jan. 31, 2014
Expiration Dates of Collective Bargaining Agreements, Last	Apr. 30, 2016
United Food and Commercial Workers Local One Pension Fund
Defined Benefit Plan Disclosure [Line Items]
EIN/Pension Plan Number	16-6144007/001	[2]
Pension Protection Act Zone Status	Red	[2]	Red	[2]
FIP / RP Status Pending / Implemented	Implemented	[2]
Contributions	123	[2]	120	[2]	107	[2]
Surcharge Imposed	No	[2]
Expiration Dates of Collective Bargaining Agreements, First	Dec. 31, 2014
Pension Fund All Other
Defined Benefit Plan Disclosure [Line Items]
Contributions	$ 4,287		$ 4,444		$ 4,196

[1] The applicable collective bargaining agreements related to this pension fund expire between January 31, 2014 and April 30, 2016.

[2] The collective bargaining agreement related to this pension fund expires on December 31, 2014.