Annual report pursuant to Section 13 and 15(d)

WATER AND LAND ASSETS, Land and Mineral Rights (Details)

v3.21.2
WATER AND LAND ASSETS, Land and Mineral Rights (Details)
$ in Thousands
12 Months Ended
Aug. 31, 2021
USD ($)
a
Aug. 31, 2020
USD ($)
a
Aug. 31, 2010
a
Land and Mineral Rights [Abstract]      
Area of land (in acres) | a 930    
Non-cash mineral interest impairment charge   $ 1,425  
Net land and mineral interests $ 5,924 4,915  
Sky Ranch [Member]      
Land and Mineral Rights [Abstract]      
Area of land (in acres) | a     930
Area of land sold (in acres) | a 215    
Land $ 2,601 3,569  
Development costs 3,105 1,128  
Lost Creek Land [Member]      
Land and Mineral Rights [Abstract]      
Land $ 218 $ 218  
Arkansas River Land [Member]      
Land and Mineral Rights [Abstract]      
Mineral estate area owned (in acres) | a   13,900  
Non-cash mineral interest impairment charge   $ 1,400