PLEDGED ASSETS - Assets Pledged to Counterparties (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Financial Instrument Secured2 [Domain]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest Receivable	$ 749,000	$ 777,000
Restricted Cash And Cash Equivalents At Carrying Value	4,315,000	1,293,000
Repurchase Agreements [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest Receivable	749,000	777,000
Restricted Cash And Cash Equivalents At Carrying Value	3,778,000	230,000
Derivative [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest Receivable	0	0
Restricted Cash And Cash Equivalents At Carrying Value	537,000	1,063,000
Residential Mortgage Backed Securities [Member] \| Financial Instrument Secured2 [Domain] \| Mortgage Backed Securities Pass Through Certificates [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments, Owned and Pledged as Collateral, at Fair Value	216,231,000	209,675,000
Residential Mortgage Backed Securities [Member] \| Financial Instrument Secured2 [Domain] \| Mortgage Backed Securities Structured Certificates [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments, Owned and Pledged as Collateral, at Fair Value	1,562	2,675
Residential Mortgage Backed Securities [Member] \| Repurchase Agreements [Member] \| Mortgage Backed Securities Pass Through Certificates [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments, Owned and Pledged as Collateral, at Fair Value	216,231,000	209,675,000
Residential Mortgage Backed Securities [Member] \| Repurchase Agreements [Member] \| Mortgage Backed Securities Structured Certificates [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments, Owned and Pledged as Collateral, at Fair Value	1,562	2,675
Residential Mortgage Backed Securities [Member] \| Derivative [Member] \| Mortgage Backed Securities Pass Through Certificates [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments, Owned and Pledged as Collateral, at Fair Value	0	0
Residential Mortgage Backed Securities [Member] \| Derivative [Member] \| Mortgage Backed Securities Structured Certificates [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments, Owned and Pledged as Collateral, at Fair Value	$ 0	$ 0

The fair value as of the balance sheet date of financial instruments and other positions owned by the entity and pledged to counterparties as collateral, including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 45
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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