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Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jan. 31, 2025
Jan. 31, 2024
Jan. 31, 2025
Jan. 31, 2024
Income Statement [Abstract]        
Revenues $ 825 $ 1,792 $ 4,545 $ 3,953
Cost of revenues 628 979 3,106 1,989
Gross margin 197 813 1,439 1,964
Operating expenses 6,072 8,551 15,702 24,648
Gain from change in fair value of consideration (33) (117)
Operating loss (5,875) (7,705) (14,263) (22,567)
Interest income, net 6 151 13 760
Other income (expense), net (13) 4
Loss on disposition of assets (210) (210)
Loss on extinguishment of debt (838) (838)
Foreign exchange gain (loss) 1 (1) 2
Loss before income taxes (6,720) (7,763) (15,085) (22,015)
Income tax benefit 1,254 1,254
Net loss $ (6,720) $ (6,509) $ (15,085) $ (20,761)
Basic net loss per share $ (0.04) $ (0.11) $ (0.13) $ (0.35)
Diluted net loss per share $ (0.04) $ (0.11) $ (0.13) $ (0.35)
Weighted average shares used to compute basic net loss per common share 147,543,452 58,865,898 112,630,443 58,790,160
Weighted average shares used to compute diluted net loss per common share 147,543,452 58,865,898 112,630,443 58,790,160