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Other Property (Tables)
 12 Months Ended
May 31, 2016
Property, Plant and Equipment [Abstract]  
Other Property
Other property, at cost, consisted of the following at May 31:
 
2016
 
2015
Land
$
6,985

 
$
6,985

Buildings
15,906

 
15,895

Furniture and other equipment
6,907

 
6,733

Leasehold improvements
244

 
256

 
30,042

 
29,869

Less—accumulated depreciation and amortization
(17,653
)
 
(16,749
)
 
$
12,389

 
$
13,120