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FAIR VALUE MEASUREMENTS: (Tables)
 12 Months Ended
Apr. 30, 2013
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, 2013, 2012 and 2011, 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
 
2013:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Real estate inventory
 
$
-
 
$
-
 
$
2,390
 
$
1,125
 
Investment assets
 
$
-
 
$
-
 
$
1,076
 
$
386
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2012:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Real estate inventory
 
$
-
 
$
-
 
$
744
 
$
525
 
Investment assets
 
$
-
 
$
-
 
$
430
 
$
45
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2011:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Mortgage note receivable
 
$
-
 
$
-
 
$
451
 
$
450
 
Real estate inventory
 
$
-
 
$
-
 
$
10,032
 
$
6,377
 
Goodwill
 
$
-
 
$
-
 
$
-
 
$
3,893