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COMMITMENTS AND CONTINGENCIES - Lease commitments (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
item
Dec. 31, 2015
USD ($)
Lease commitments    
2017 $ 132,000  
2018 132,000  
2019 132,000  
2020 132,000  
2021 137,000  
Thereafter 1,288,000  
Total future minimum rental payments 1,953,000  
Rental expense $ 132,000 $ 205,000
Lease agreement, one    
Lease commitments    
Extended additional term of operating lease 10 years  
Lease agreement, two    
Lease commitments    
Extended additional term of operating lease 5 years  
Number of additional five year terms for lease extensions | item 2