XML 15 R4.htm IDEA: XBRL DOCUMENT v3.20.4
Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2021
Jan. 31, 2020
Income Statement [Abstract]        
Revenues $ 317 $ 725 $ 604 $ 1,131
Cost of revenues 698 681 1,248 1,335
Gross profit/(loss) (381) 44 (644) (204)
Operating expenses:        
Engineering and product development costs 1,019 896 3,334 3,403
Selling, general and administrative costs 1,763 2,093 5,591 5,629
Total operating expenses 2,782 2,989 8,925 9,032
Operating loss (3,163) (2,945) (9,569) (9,236)
Gain due to the change in fair value of warrant liabilities 6
Interest income, net 25 27 45 102
Other expense, net (16) (49)
Foreign exchange gain/(loss) 3 (1) 13 (5)
Net loss $ (3,151) $ (2,919) $ (9,560) $ (9,133)
Basic and diluted net loss per share $ (0.09) $ (0.46) $ (0.41) $ (1.40)
Weighted average shares used to compute basic and diluted net loss per share 33,715,334 6,318,162 23,160,885 6,543,500