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Note 7 - Federal, State and Local Income Taxes (Tables)
12 Months Ended
Apr. 30, 2021
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
   
Fiscal Years Ended April 30,
 
($ in thousands)
 
2021
   
2020
   
2019
 
Current tax expense:
                       
Federal
  $
5,407
    $
4,201
    $
2,964
 
State and local
   
1,046
     
1,353
     
600
 
Current tax expense
   
6,453
     
5,554
     
3,564
 
Deferred tax expense (benefit):
                       
Federal
   
859
     
(174
)    
(422
)
State and local
   
(316
)    
328
     
1,162
 
Deferred tax expense (benefit):
   
543
     
154
     
740
 
Income tax provision
  $
6,996
    $
5,708
    $
4,304
 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
    Fiscal Years Ended April 30,  
($ in thousands)
 
2021
   
2020
 
Federal tax liability (benefit):
               
Deferred gain on deconsolidation of EAM
  $
10,669
    $
10,669
 
Deferred non-cash post-employment compensation
   
(372
)    
(372
)
Depreciation and amortization
   
108
     
108
 
Unrealized gain on securities held for sale
   
941
     
299
 
Right of Use Asset
   
(196
)    
(182
)
Deferred charges
   
(186
)    
(166
)
Other
   
(218
)    
(207
)
Total federal tax liability
   
10,746
     
10,149
 
                 
State and local tax liabilities (benefits):
               
Deferred gain on deconsolidation of EAM
   
1,807
     
2,564
 
Deferred non-cash post-employment compensation
   
(63
)    
(88
)
Depreciation and amortization
   
18
     
44
 
Unrealized gain on securities held for sale
   
159
     
72
 
Other
   
238
     
110
 
Total state and local tax liabilities
   
2,159
     
2,702
 
Deferred tax liability, long-term
  $
12,905
    $
12,851
 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
Fiscal Years Ended April 30,
 
   
2021
   
2020
   
2019
 
U.S. statutory federal tax rate
   
21.00
%    
21.00
%    
21.00
%
Increase (decrease) in tax rate from:
                       
State and local income taxes, net of federal income tax benefit
   
2.05
%    
6.30
%    
6.02
%
Effect of dividends received deductions
   
(0.31
%)    
(0.24
%)    
(0.24
%)
Other, net
   
0.37
%    
0.58
%    
(0.40
%)
Effective income tax rate
   
23.11
%    
27.64
%    
26.38
%