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Schedule of Individually Significant Multiemployer Pension Plan (Detail) - Multiemployer Pension Plans - Bakery and Confectionery Union and Industry International Pension Fund
12 Months Ended
Dec. 31, 2016
Multiemployer Plans [Line Items]  
Pension Fund Bakery and Confectionery Union and Industry International Pension Fund
EIN / Pension Plan Number 526118572
Pension Protection Act Zone Status Red
FIP / RP Status Pending / Implemented Implemented
Surcharge Imposed Yes
Expiration Date of Collective- Bargaining Agreements Feb. 29, 2016