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Acquisitions (Detail) - USD ($) $ in Thousands | Oct. 10, 2017 | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill |  |  | $ 47,803 | $ 49,464
Customer Relationships [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  | 144 months |  |
Above Market Leases [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  | 153 months |  |
Gross Value [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Accounts receivable |  |  | 14,668 |
Other assets |  |  | 734 |
Inventories |  |  | 103,876 |
Property and equipment |  |  | 24,179 |
Customer relationships |  |  | 29,660 |
Above-market leases |  |  | 567 |
Goodwill |  |  | 48,609 |
Total assets acquired |  |  | 222,293 |
Accounts payable and accrued expenses |  |  | 3,210 |
Other current liabilities |  |  | 10,114 |
Total liabilities assumed |  |  | 13,324 |
Total purchase price |  |  | 208,969 |
Adjustments [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Inventories | [1] |  | 1,661 |
Goodwill | [1] |  | (1,661) |
Total assets acquired | [1] |  | 0 |
Total liabilities assumed | [1] |  | 0 |
Total purchase price | [1] |  | 0 |
Net Value [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Accounts receivable |  |  | 14,668 |
Other assets |  |  | 734 |
Inventories |  |  | 105,537 |
Property and equipment |  |  | 24,179 |
Customer relationships |  |  | 29,660 |
Above-market leases |  |  | 567 |
Goodwill |  |  | 46,948 |
Total assets acquired |  |  | 222,293 |
Accounts payable and accrued expenses |  |  | 3,210 |
Other current liabilities |  |  | 10,114 |
Total liabilities assumed |  |  | 13,324 |
Total purchase price |  |  | $ 208,969 |
[1] | The Company obtained further information regarding the fair value of acquired inventory based on information that existed as of the acquisition date.

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