v3.10.0.1
Summary of Significant Accounting Policies - Concentrations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Concentration Risk [Line Items]        
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants 46.30%   46.30%  
Impairment of property and equipment $ 0 $ 0 $ 1,417 $ 0
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants Before Expiration 14.40%   14.40%  
Customer concentration risk | Consolidated net revenues        
Concentration Risk [Line Items]        
Percentage of Consolidated Net Revenues 19.00% 20.60% 18.70% 19.80%
Customer concentration risk | Consolidated net revenues | Sweet Baked Goods        
Concentration Risk [Line Items]        
Percentage of Consolidated Net Revenues 18.40% 19.90% 18.10% 19.10%
Customer concentration risk | Consolidated net revenues | In-Store Bakery        
Concentration Risk [Line Items]        
Percentage of Consolidated Net Revenues 0.60% 0.70% 0.60% 0.70%