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Earnings Per Common Share (Tables)
 3 Months Ended
Jul. 31, 2021
Earnings Per Share [Abstract]  
Basic Earnings Per Common Share
The following tables set forth the computation of basic earnings per common share and diluted earnings per common share (in thousands except for per share amounts):

Basic earnings per common share:
 Three Months Ended
July 31, 2021		Three Months Ended
July 31, 2020
Class A
Common
Shares		Class B
Common
Shares		Class A
Common
Shares		Class B
Common
Shares
Distributed earnings$0.11 $0.11 $0.11 $0.11 
Undistributed losses(0.02)(0.02)(0.05)(0.05)
Total$0.09 $0.09 $0.06 $0.06 
Distributed earnings$3,457 $202 $3,370 $201 
Undistributed losses(673)(39)(1,450)(87)
Total$2,784 $163 $1,920 $114 
Basic weighted average common shares outstanding31,231 1,822 30,517 1,822 
Diluted Earnings Per Share for Class A Common Shares Using If-Converted Method
Diluted EPS for Class A Common Shares Using the If-Converted Method
Three Months Ended July 31, 2021
Undistributed
& Distributed
Earnings
to Class A
Common
Shares		Class A
Common
Shares		EPS*
Per Basic$2,784 31,231 $0.09 
Common Stock Equivalents— 893 — 
2,784 32,124 0.09 
Class B Common Share Conversion163 1,822 — 
Diluted EPS for Class A Common Shares$2,947 33,946 $0.09 



Three Months Ended July 31, 2020
Undistributed
& Distributed
Earnings
to Class A
Common
Shares		Class A
Common
Shares		EPS*
Per Basic$1,920 30,517 $0.06 
Common Stock Equivalents— 593 — 
1,920 31,110 0.06 
Class B Common Share Conversion114 1,822 — 
Diluted EPS for Class A Common Shares$2,034 32,932 $0.06 
Diluted Earnings Per Share for Class B Common Shares Using Two-Class Method
Diluted EPS for Class B Common Shares Using the Two-Class Method
Three Months Ended July 31, 2021
Undistributed
& Distributed
Earnings
to Class B
Common
Shares		Class B
Common
Shares		EPS*
Per Basic$163 1,822 $0.09 
Reallocation of undistributed earnings/losses from Class A Common Shares to Class B Common Shares1 — — 
Diluted EPS for Class B Common Shares$164 1,822 $0.09 
Three Months Ended July 31, 2020
Undistributed
& Distributed
Earnings
to Class B
Common
Shares		Class B
Common
Shares		EPS*
Per Basic$114 1,822 $0.06 
Reallocation of undistributed earnings/losses from Class A Common Shares to Class B Common Shares2 — — 
Diluted EPS for Class B Common Shares$116 1,822 $0.06 
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*Amounts adjusted for rounding