PLEDGED ASSETS - Assets Pledged By Counterparties (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Pledged Assets [Line Items]
Securities Pledged By Counterparties	$ 6,608,000	$ 20,165,000
Residential Mortgage Backed Securities [Member] | Pass Through Certificate [Member]
Pledged Assets [Line Items]
Securities Pledged By Counterparties	669,000	1,557,000
USTreasurySecuritiesMember
Pledged Assets [Line Items]
Securities Pledged By Counterparties	2,941,000	180,000
Cash
Pledged Assets [Line Items]
Securities Pledged By Counterparties	2,998,000	18,428,000
Repurchase Agreement [Member]
Pledged Assets [Line Items]
Securities Pledged By Counterparties	6,226,000	5,589,000
Repurchase Agreement [Member] | Residential Mortgage Backed Securities [Member] | Pass Through Certificate [Member]
Pledged Assets [Line Items]
Securities Pledged By Counterparties	669,000	1,557,000
Repurchase Agreement [Member] | USTreasurySecuritiesMember
Pledged Assets [Line Items]
Securities Pledged By Counterparties	2,941,000	180,000
Repurchase Agreement [Member] | Cash
Pledged Assets [Line Items]
Securities Pledged By Counterparties	2,616,000	3,852,000
Derivative [Member]
Pledged Assets [Line Items]
Securities Pledged By Counterparties	382,000	14,576,000
Derivative [Member] | Residential Mortgage Backed Securities [Member] | Pass Through Certificate [Member]
Pledged Assets [Line Items]
Securities Pledged By Counterparties	0	0
Derivative [Member] | USTreasurySecuritiesMember
Pledged Assets [Line Items]
Securities Pledged By Counterparties	0	0
Derivative [Member] | Cash
Pledged Assets [Line Items]
Securities Pledged By Counterparties	$ 382,000	$ 14,576,000