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Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Treasury Stock, Common [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balance at Apr. 30, 2022 $ 56 $ (341) $ 322,932 $ (253,770) $ (46) $ 68,831
Balance, shares at Apr. 30, 2022 55,905,213 (23,352)        
Net loss (5,852) (5,852)
Share-based compensation 333 333
Common stock issued upon vesting of restricted stock units
Common stock issued upon vesting of restricted stock units, shares 16,667          
Balance at Jul. 31, 2022 $ 56 $ (341) 323,265 (259,622) (46) 63,312
Balance, shares at Jul. 31, 2022 55,921,880 (23,352)        
Balance at Apr. 30, 2023 $ 56 $ (355) 324,393 (280,096) (45) 43,953
Balance, shares at Apr. 30, 2023 56,304,642 (40,914)        
Net loss (7,039) (7,039)
Share-based compensation 401 401
Common stock issued related to bonus and earn out payments $ 3 1,247 1,250
Common stock issued related to bonus and earn out payments, shares 2,403,846          
Common stock issued upon vesting of restricted stock units
Common stock issued upon vesting of restricted stock units, shares 68,166          
Shares withheld for tax withholdings $ (2) (2)
Shares withheld for tax withholdings, shares   (3,766)        
Balance at Jul. 31, 2023 $ 59 $ (357) $ 326,041 $ (287,135) $ (45) $ 38,563
Balance, shares at Jul. 31, 2023 58,776,654 (44,680)