Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jul. 31, 2019	May 01, 2019
Accounting Policies [Line Items]
Right of use assets	$ 2,587
Current lease liabilities	769
Long-term lease liabilities	$ 1,957
Accounting Standards Update 2016-02
Accounting Policies [Line Items]
Right of use assets		$ 2,700
Current lease liabilities		700
Long-term lease liabilities		$ 2,100