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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Parent
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Non-controlling Interest
Total
Balance at Apr. 30, 2020 $ 509,901 $ 2 $ 181,481 $ 328,090 $ 328    
Balance, Beginning at Apr. 30, 2020             $ 509,901
Balance (in shares) at Apr. 30, 2020   24,063,639          
Increase (Decrease) in Stockholders' Equity              
Net income (loss) 12,174     12,174     12,174
Net (income) loss attributable to noncontrolling interest           $ (59) 59
Net Income (loss) including non-controlling interest             12,115
Unrealized loss on investments (61)       (61)   (61)
Foreign currency translation 75       75   75
Stock options exercised 86   86       86
Stock options exercised (in shares)   3,500          
Restricted stock awards (in shares)   60,592          
Restricted stock awards forfeited (in shares)   (515)          
Restricted stock awards forfeited (in shares)   515          
Tax withholding payment related to net share settlement of equity awards (1,778)   (1,778)       (1,778)
Tax withholding payment related to net share settlement of equity awards (in shares)   (23,236)          
Stock-based compensation 3,509   3,509       3,509
Balance at Oct. 31, 2020 523,906 $ 2 183,298 340,264 342 (59)  
Balance, Ending at Oct. 31, 2020             523,847
Balance (in shares) at Oct. 31, 2020   24,103,980          
Balance at Jul. 31, 2020 519,929 $ 2 181,406 338,170 351 (37)  
Balance, Beginning at Jul. 31, 2020             519,892
Balance (in shares) at Jul. 31, 2020   24,104,564          
Increase (Decrease) in Stockholders' Equity              
Net income (loss) 2,094     2,094     2,094
Net (income) loss attributable to noncontrolling interest           (22) 22
Net Income (loss) including non-controlling interest             2,072
Unrealized loss on investments (9)       (9)   (9)
Restricted stock awards forfeited (in shares)   245          
Restricted stock awards forfeited (in shares)   (245)          
Tax withholding payment related to net share settlement of equity awards (22)   (22)       (22)
Tax withholding payment related to net share settlement of equity awards (in shares)   (339)          
Stock-based compensation 1,914   1,914       1,914
Balance at Oct. 31, 2020 523,906 $ 2 183,298 340,264 342 (59)  
Balance, Ending at Oct. 31, 2020             523,847
Balance (in shares) at Oct. 31, 2020   24,103,980          
Balance at Apr. 30, 2021 612,093 $ 2 260,327 351,421 343 14 612,093
Balance, Beginning at Apr. 30, 2021             612,107
Balance (in shares) at Apr. 30, 2021   24,777,295          
Increase (Decrease) in Stockholders' Equity              
Net income (loss) (11,456)     (11,456)     (11,456)
Net (income) loss attributable to noncontrolling interest           94 (94)
Net Income (loss) including non-controlling interest             (11,362)
Unrealized loss on investments (3)       (3)   (3)
Foreign currency translation (2,017)       (2,017)   (2,017)
Stock options exercised 119   119       119
Stock options exercised (in shares)   4,000          
Restricted stock awards (in shares)   52,226          
Restricted stock awards forfeited (in shares)   (15,751)          
Restricted stock awards forfeited (in shares)   15,751          
Tax withholding payment related to net share settlement of equity awards (1,176)   (1,176)       (1,176)
Tax withholding payment related to net share settlement of equity awards (in shares)   (11,941)          
Change in non-controlling interest           224 224
Stock-based compensation 2,342   2,342       2,342
Balance at Oct. 30, 2021 599,902 $ 2 261,612 339,965 (1,677) 332 599,902
Balance, Ending at Oct. 30, 2021             600,234
Balance (in shares) at Oct. 30, 2021   24,805,829          
Balance at Jul. 31, 2021 598,240 $ 2 261,192 337,440 (394) 77  
Balance, Beginning at Jul. 31, 2021             598,317
Balance (in shares) at Jul. 31, 2021   24,811,802          
Increase (Decrease) in Stockholders' Equity              
Net income (loss) 2,525     2,525     2,525
Net (income) loss attributable to noncontrolling interest           31 (31)
Net Income (loss) including non-controlling interest             2,556
Unrealized loss on investments 1       1   1
Foreign currency translation (1,284)       (1,284)   (1,284)
Restricted stock awards (in shares)   3,638          
Restricted stock awards forfeited (in shares)   (9,611)          
Restricted stock awards forfeited (in shares)   9,611          
Change in non-controlling interest           224 224
Stock-based compensation 420   420       420
Balance at Oct. 30, 2021 $ 599,902 $ 2 $ 261,612 $ 339,965 $ (1,677) $ 332 599,902
Balance, Ending at Oct. 30, 2021             $ 600,234
Balance (in shares) at Oct. 30, 2021   24,805,829