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RELATED PARTY TRANSACTIONS (Details) - USD ($)
3 Months Ended 6 Months Ended
Feb. 28, 2017
Jul. 31, 2016
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Related Party Transaction [Line Items]            
Stock ownership required to be disclosed, minimum     5.00%   5.00%  
W.F. Construction [Member]            
Related Party Transaction [Line Items]            
Contract to modify water treatment plant $ 100,000 $ 131,000        
Amount paid to related party     $ 44,000 $ 0 $ 87,000 $ 0
Accrued liabilities     $ 0 $ 0 $ 0 $ 0