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Investment in Unconsolidated Joint Venture - Summary of Equity Method Investment (Detail) - CLIH [Member] - USD ($) $ in Thousands | Jul. 29, 2018 | Apr. 29, 2018 | Jul. 30, 2017
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Schedule of Equity Method Investments [Line Items] |  |  |
Total assets | $ 3,153 | $ 3,130 | $ 3,003
Total liabilities | 103 | 128 | 48
Total members' equity | $ 3,050 | $ 3,002 | $ 2,955

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