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FAIR VALUE MEASUREMENTS: (Tables)
 12 Months Ended
Apr. 30, 2016
Fair Value Disclosures [Abstract]  
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]
The following presents assets by balance sheet caption and by the level within the fair value hierarchy (as described above) as of April 30, 2016 and 2015, for which a non-recurring change in fair value has been recorded during the years then ended (in thousands):
 
 
 
Level 1
 
Level 2
 
Level 3
 
Impairment
Loss
Recorded
 
2016:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Real estate inventory
 
$
-
 
$
-
 
$
21,251
 
$
2,506
 
Property, plant and equipment
 
$
-
 
$
-
 
$
9,302
 
$
3,094
 
Intangible and other assets
 
$
-
 
$
-
 
$
7
 
$
4,806
 
 
 
 
Level 1
 
Level 2
 
Level 3
 
Impairment
Loss
Recorded
 
2015:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Real estate inventory
 
$
-
 
$
-
 
$
2,048
 
$
1,504
 
Investment assets
 
$
-
 
$
-
 
$
1,439
 
$
305
 
Property, plant and equipment
 
$
-
 
$
-
 
$
-
 
$
771