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Subsequent Events - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
1 Months Ended 1 Months Ended
Oct. 26, 2012
BBU, Inc.
Jan. 11, 2013
Subsequent Event
Hostess Brands, Inc
Agreement One
Facility
Jan. 11, 2013
Subsequent Event
Hostess Brands, Inc
Agreement Two
Feb. 15, 2013
Subsequent Event
Dividend Declared
Subsequent Event [Line Items]        
Dividend declaration date       Feb. 15, 2013
Dividend per share on common stock       $ 0.16
Dividend to be paid date       Mar. 15, 2013
Dividend record date       Mar. 01, 2013
Aggregate purchase price $ 50.0 $ 360.0 $ 30.0  
Number of bakeries acquired in acquisition   20    
Number of depots acquired in acquisition   38