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Stock Based Compensation (Details)
shares in Thousands, $ in Thousands
3 Months Ended
Aug. 03, 2019
USD ($)
shares
Stock Based Compensation (Details) [Line Items]  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount (in Dollars) | $ $ 330
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 250
Share Based Compensation Arrangement By Share Based Payment Award Options And Other Than Options Outstanding Number 130
Share Based Compensation Arrangement By Share Based Payment Award Options And Other Than Options Vested And Expected To Vest Exercisable Number 102
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 219
Share-based Payment Arrangement, Option [Member]  
Stock Based Compensation (Details) [Line Items]  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount (in Dollars) | $ $ 435
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 9 months
Restricted Stock [Member]  
Stock Based Compensation (Details) [Line Items]  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount (in Dollars) | $ $ 105
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 3 years 36 days