Summary of Significant Accounting Policies - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 361,496	$ 325,076	$ 1,050,553	$ 944,422
Net Sales | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of total Net sales	100.00%	100.00%	100.00%	100.00%
Center-of-the-Plate
Disaggregation of Revenue [Line Items]
Net sales	$ 152,805	$ 144,105	$ 454,673	$ 415,253
Center-of-the-Plate | Net Sales | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of total Net sales	42.30%	44.30%	43.30%	44.00%
Dry Goods
Disaggregation of Revenue [Line Items]
Net sales	$ 65,269	$ 56,442	$ 185,243	$ 164,023
Dry Goods | Net Sales | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of total Net sales	18.10%	17.40%	17.60%	17.40%
Pastry
Disaggregation of Revenue [Line Items]
Net sales	$ 49,219	$ 43,654	$ 144,379	$ 128,483
Pastry | Net Sales | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of total Net sales	13.60%	13.40%	13.70%	13.60%
Cheese and Charcuterie
Disaggregation of Revenue [Line Items]
Net sales	$ 39,481	$ 32,753	$ 111,497	$ 99,847
Cheese and Charcuterie | Net Sales | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of total Net sales	10.90%	10.10%	10.60%	10.60%
Dairy and Eggs
Disaggregation of Revenue [Line Items]
Net sales	$ 27,511	$ 23,294	$ 77,778	$ 65,324
Dairy and Eggs | Net Sales | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of total Net sales	7.60%	7.20%	7.40%	6.90%
Oils and Vinegar
Disaggregation of Revenue [Line Items]
Net sales	$ 19,808	$ 18,360	$ 56,326	$ 53,178
Oils and Vinegar | Net Sales | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of total Net sales	5.50%	5.60%	5.40%	5.60%
Kitchen Supplies
Disaggregation of Revenue [Line Items]
Net sales	$ 7,403	$ 6,468	$ 20,657	$ 18,314
Kitchen Supplies | Net Sales | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of total Net sales	2.00%	2.00%	2.00%	1.90%