FAIR VALUE MEASUREMENTS (Tables)
 9 Months Ended
Jan. 31, 2016
FAIR VALUE MEASUREMENTS [Abstract]  
Fair Value Measurements on a Nonrecurring Basis
The aggregate fair value of these assets by their levels in the fair value hierarchy is as follows:

  
(in thousands)
 
  
Total
  
Level 1
  
Level 2
  
Level 3
 
January 31, 2016
            
Real estate held for sale
 
$
20
  
$
0
  
$
0
  
$
20
 
                 
April 30, 2015
                
Real estate held for sale
  
7,100
   
0
   
0
   
7,100
 
Estimated Fair Values of Financial Instruments
The estimated fair values of our financial instruments as of January 31, 2016 and April 30, 2015, are as follows:

  
(in thousands)
 
  
January 31, 2016
  
April 30, 2015
 
  
Carrying Amount
  
Fair Value
  
Carrying Amount
  
Fair Value
 
FINANCIAL ASSETS
            
Cash and cash equivalents
 
$
47,117
  
$
47,117
  
$
48,970
  
$
48,970
 
Other investments
  
50
   
50
   
329
   
329
 
FINANCIAL LIABILITIES
                
Other debt
  
140,155
   
139,658
   
144,090
   
143,749
 
Line of credit
  
17,500
   
17,500
   
60,500
   
60,500
 
Mortgages payable
  
761,645
   
803,479
   
668,112
   
749,604
 
Mortgages payable related to assets held for sale
  
10,661
   
12,757
   
306,716
   
374,818