ACCOUNTING PRONOUNCEMENTS - Leases (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jan. 01, 2019
ACCOUNTING PRONOUNCEMENTS
Operating ROU assets	$ 0.5	$ 0.6
Operating lease liabilities	$ 0.5	$ 0.6
Weighted average remaining term (in years)	2 years 4 months 28 days
Discount rate (in percent)	3.57%