Annual report pursuant to Section 13 and 15(d)

Long Term Debt (Details)

v3.21.2
Long Term Debt (Details)
SFr in Thousands, $ in Thousands
1 Months Ended 12 Months Ended
Sep. 29, 2021
Nov. 27, 2018
USD ($)
Jul. 31, 2021
USD ($)
Apr. 30, 2021
USD ($)
Apr. 30, 2020
USD ($)
Apr. 30, 2020
CHF (SFr)
Long Term Debt (Details) [Line Items]            
Debt instrument, face amount   $ 4,500        
Debt instrument maturity period   10 years        
Debt instrument, interest rate, stated percentage   5.09%        
Debt instrument, periodic payment   $ 30        
Amortization of debt issuance costs   $ 72        
Unamortized debt issuance expense     $ 53      
Mortgage agreement     4,100      
Cash collateral for borrowed securities     $ 750      
Operating lease, description     We assumed from the seller an operating lease for a tenant at the facility which expired on June 30, 2020.      
Liquid assets     $ 25,000      
Description of loan the Company and the mortgagee agreed to further covenant restructuring whereby (a) the liquidity covenant was reduced to 150% of the loan principal (or approximately $6,000 July 31, 2021) from $25,000 previously, and (b) the collateral requirement was increased from $750 to $1,000.          
Foreign exchange rate amount       $ 400   SFr 400
Bear interest rate       0.00%    
Long term debt term       5 years    
Fixed interest rate, description     PPP loans have a 1% fixed interest rate and are due from two to five years.      
Maturity date, description     We applied for the PPP loan based on the eligibility and need requirements established when the program was announced and in April 2020 received $7,000 through Citibank N.A., the Company’s existing lender, pursuant to the PPP (the “PPP Loan”).      
Audit loans     $ 2,000      
Other income loan     $ 7,000      
Citibank N.A [Member]            
Long Term Debt (Details) [Line Items]            
Cash collateral for borrowed securities         $ 7,000