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Investment in Unconsolidated Joint Venture - Summary of Equity Method Investment (Detail) - CLIH [Member] - USD ($)
$ in Thousands
Oct. 28, 2018
Apr. 29, 2018
Oct. 29, 2017
Schedule of Equity Method Investments [Line Items]      
Total assets $ 3,063 $ 3,130 $ 3,180
Total liabilities 124 128 136
Total members' equity $ 2,939 $ 3,002 $ 3,044