PLEDGED ASSETS - Assets Pledged By Counterparties (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Pledged Assets [Line Items]
Securities Pledged By Counterparties	$ 427	$ 1,418
Cash
Pledged Assets [Line Items]
Securities Pledged By Counterparties	427	1,418
Repurchase Agreement [Member]
Pledged Assets [Line Items]
Securities Pledged By Counterparties	427	1,418
Repurchase Agreement [Member] | Cash
Pledged Assets [Line Items]
Securities Pledged By Counterparties	427	1,418
Derivative [Member]
Pledged Assets [Line Items]
Securities Pledged By Counterparties	0	0
Derivative [Member] | Cash
Pledged Assets [Line Items]
Securities Pledged By Counterparties	$ 0	$ 0