Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts	$ (3,872)	$ (3,924)
Accounts receivable, net	317,568	308,285
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross, current	173,119	160,783
Credit Card Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross, current	99,844	98,484
Vendor receivables for rebates, branding and other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross, current	13,398	14,561
Other Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross, current	$ 35,079	$ 38,381