DISCLOSURES ABOUT FAIR VALUE - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets
Available-for-sale equity securities		$ 1,218
Available-for-sale debt securities	$ 0	684
Carrying Value		$ 1,902
Measured at Fair Value on a Recurring Basis
Assets
Available-for-sale equity securities	1,219
Available-for-sale debt securities	683
Carrying Value	1,902
Quoted Prices In Active Markets for Identical Assets (Level 1) | Measured at Fair Value on a Recurring Basis
Assets
Available-for-sale equity securities	975
Available-for-sale debt securities	683
Carrying Value	1,658
Significant Other Observable Inputs (Level 2) | Measured at Fair Value on a Recurring Basis
Assets
Available-for-sale equity securities	244
Available-for-sale debt securities
Carrying Value	244
Significant Unobservable Inputs (Level 3) | Measured at Fair Value on a Recurring Basis
Assets
Available-for-sale equity securities
Available-for-sale debt securities
Carrying Value	$ 0