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Note 8 - Federal, State and Local Income Taxes (Tables)
6 Months Ended
Oct. 31, 2019
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
   
Three Months Ended October 31,
   
Six Months Ended October 31,
 
($ in thousands)
 
2019
   
2018
   
2019
   
2018
 
Current tax expense:
                               
Federal
  $
1,143
    $
871
    $
2,133
    $
1,605
 
State and local
   
319
     
72
     
615
     
160
 
Current tax expense
   
1,462
     
943
     
2,748
     
1,765
 
Deferred tax expense (benefit):
                               
Federal
   
(38
)    
5
     
(54
)    
5
 
State and local
   
195
     
17
     
272
     
(254
)
Deferred tax expense (benefit):
   
157
     
22
     
218
     
(249
)
Income tax provision
  $
1,619
    $
965
    $
2,966
    $
1,516
 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
   
October 31,
   
April 30,
 
($ in thousands)
 
2019
   
2019
 
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
   
115
     
130
 
Unrealized gain on securities held for sale
   
542
     
446
 
Deferred charges
   
(341
)    
(354
)
Other
   
(347
)    
(279
)
Total federal tax liability
   
10,266
     
10,240
 
                 
State and local tax liabilities (benefits):
               
Deferred gain on deconsolidation of EAM
   
2,814
     
2,530
 
Deferred non-cash post-employment compensation
   
(98
)    
(74
)
Depreciation and amortization
   
28
     
40
 
Other
   
(88
)    
(112
)
Total state and local tax liabilities
   
2,656
     
2,384
 
Deferred tax liability, long-term
  $
12,922
    $
12,624
 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
Six Months Ended October 31,
 
   
2019
   
2018
 
U.S. statutory federal tax rate
   
21.00
%    
21.00
%
Increase (decrease) in tax rate from:
               
State and local income taxes, net of federal income tax benefit
   
6.45
%    
(1.62
)%
Effect of dividends received deductions
   
(0.20
)%    
(0.24
)%
Other, net
   
0.04
%    
0
%
Effective income tax rate
   
27.29
%    
19.14
%