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Share Repurchase (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jan. 30, 2021	Jan. 30, 2021	Apr. 30, 2020	Sep. 30, 2015
Share Repurchase
Stock Repurchase Program, Authorized Amount				$ 25,000
Shares repurchased and retired	0	0
Share authorized for future repurchases	$ 21,200	$ 21,200	$ 21,200

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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