XML 132 R54.htm IDEA: XBRL DOCUMENT v3.20.2
Intangibles, net (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Oct. 31, 2020
Oct. 26, 2019
Oct. 31, 2020
Oct. 26, 2019
Apr. 30, 2020
Intangibles, net          
Amortization expense $ 715 $ 755 $ 1,424 $ 1,327  
Weighted average          
Intangibles, net          
Weighted average amortization period     4 years   4 years