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ACCOUNTING PRONOUNCEMENTS - Leases (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Jan. 01, 2019
ACCOUNTING PRONOUNCEMENTS    
Operating ROU assets $ 0.4 $ 0.6
Operating lease liabilities $ 0.4 $ 0.6
Weighted average remaining term (in years) 2 years 2 months 4 days  
Discount rate (in percent) 3.57%