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Goodwill - Additional Information (Detail) - USD ($)	Oct. 08, 2016	Jul. 15, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill		$ 366,636,000	$ 322,686,000
Retail [Member]
Goodwill [Line Items]
Goodwill	$ 190,500,000	$ 189,088,000	$ 190,319,000
Percentage of fair value exceeds carrying value of retail reporting unit	13.10%
Goodwill impairment charge	$ 0
Future discounted cash flow rate	2.50%
Incremental basis points in discounted cash flow rate	0.75%

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of fair value of reporting unit in excess of carrying amount.

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