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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Dec. 22, 2017	May 31, 2018
Income Taxes [Line Items]
Decreased income tax expense		$ (4,800)
Federal corporate tax rate	35.00%	21.00%
Deferred tax benefit		$ (6,022)
Current tax expense		$ 1,223

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Income Taxes [Line Items]

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New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Income Tax Expense (Benefit)

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Tax cuts and jobs act of 2017 change in tax rate deferred income tax expense benefit.

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Tax cuts and jobs act of 2017 change in tax rate repatriation of foreign earning.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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