Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On March 9, 2018, we entered into an Agreement and Plan of Merger with Cedar Creek, pursuant to which we agreed to acquire Cedar Creek in a merger transaction with one of our wholly-owned subsidiaries. The merger was consummated on April 13, 2018. As a result of the merger, we increased the number of our distribution facilities to approximately 70 facilities, and increased the number of full-time employees to approximately 2,600 persons. The Merger Agreement provided for an aggregate purchase price of $413.0 million on a debt-free, cash-free basis (the “Merger Consideration”). The Merger Consideration consisted of approximately $345.0 million in cash for payments to the equity holders of Cedar Creek and other closing payments, and approximately $68.0 million as the agreed value of capital leases. The Company used a portion of the proceeds from the Amended and Restated Revolving Credit Facility and the Term Loan (each as defined below) to finance the acquisition of Cedar Creek. On April 13, 2018, in connection with the acquisition of Cedar Creek, we amended and restated our existing credit agreement, pursuant to which we increased the aggregate commitments of our senior-secured asset-based revolving loan and letter of credit facility (the “Amended and Restated Revolving Credit Facility”) to $600.0 million (an increase of $265.0 million). The Amended and Restated Revolving Credit Facility also provides for an uncommitted accordion feature that permits us to increase the facility by an aggregate additional principal amount of up to $150.0 million, subject to certain conditions, including lender consent. The maturity date pursuant to the Amended and Restated Revolving Credit Facility remains October 10, 2022. A portion of the proceeds from the Amended and Restated Revolving Credit Facility were used to fund a portion of the Merger Consideration and to fund transaction costs in connection with the Amended and Restated Revolving Credit Facility, and also transaction costs in connection with the acquisition of Cedar Creek. On the same date, also in connection with the acquisition of Cedar Creek, we entered into a credit and guaranty agreement (the “Term Loan Agreement”) with HPS Investment Partners, LLC, as administrative agent and collateral agent (“HPS”). The Term Loan Agreement provides for a senior secured first lien term loan facility in an aggregate principal amount of $180.0 million (the “Term Loan”). The Term Loan requires principal payments of $450,000 each quarter, in arrears.The Term Loan Agreement requires certain mandatory prepayments of outstanding loans, subject to certain exceptions, including prepayments based on (i) net cash proceeds of certain asset sales, casualty and condemnation events and extraordinary receipts, (ii) net cash proceeds of certain issuances of debt, and (iii) commencing with the fiscal year ending December 28, 2019, a percentage of excess cash flow (as defined in the Term Loan Agreement for such fiscal year).The remaining balance is due on the loan maturity date October 13, 2023. In connection with the execution and delivery of the Term Loan Agreement, we also entered into a pledge and security agreement with HPS (the “Term Loan Security Agreement”). Pursuant to the Term Loan Security Agreement and other “Collateral Documents” (as such term is defined in the Term Loan Agreement), our obligations under the Term Loan Agreement are secured by a security interest in substantially all of our assets, including inventories, accounts receivable, real property, and proceeds from those items. The proceeds from the Term Loan were used to fund a portion of the Merger Consideration and to fund transaction costs of the Term Loan and transaction costs in connection with the acquisition of Cedar Creek.