XML 58 R47.htm IDEA: XBRL DOCUMENT v3.19.2
Provision for Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Federal Income Tax Expense (Benefit), Continuing Operations [Abstract]    
Provision for Income Taxes, Current, Federal $ 0 $ 0
Provision for Income Taxes, Total, Federal 0 0
State and Local Income Tax Expense (Benefit), Continuing Operations [Abstract]    
Provision for Income Taxes, Current, State 2 3
Provision for Income Taxes, Total, State 2 3
Foreign Income Tax Expense (Benefit), Continuing Operations [Abstract]    
Provision for Income Taxes, Current, Foreign 101 30
Provision for Income Taxes, Total, Foreign 101 30
Provision for Income Taxes, Current, Total 103 33
Provision for Income Taxes, Total $ 103 $ 33