Summary of Company Information (Details) - Jun. 30, 2015	center location facility
Revenue from External Customer [Line Items]
Number of customer locations | location	36,000
Number of distribution centers	29
Number of distribution facilities operating as a third party logistics provider | facility	2
United States
Revenue from External Customer [Line Items]
Number of distribution centers	25
Canada
Revenue from External Customer [Line Items]
Number of distribution centers	4