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Other Noncurrent Assets (Detail) - USD ($)
$ in Thousands
Jan. 28, 2018
Apr. 30, 2017
Jan. 29, 2017
Other Assets, Noncurrent [Abstract]      
Cash surrender value - life insurance $ 394 $ 376 $ 376
Non-compete agreement, net 772 828 847
Customer relationships, net 625 664 677
Other 524 526 517
Other assets $ 2,315 $ 2,394 [1] $ 2,417
[1] Derived from audited financial statements.