Represents the credit support fee agreed to be paid expressed as percentage of average outstanding balance.

No definition available.

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- Definition

Debt Instrument, Credit Support Fee, Average Amount of Loans Outstanding Threshold

+ References

No definition available.

+ Details

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- Definition

Represents the amount of credit support fee paid.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Represents the base management fees incurred as a percentage of stockholder's equity per annum.

+ References

No definition available.

+ Details

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- Definition

Represents the incentive fee payable on cumulative core earnings that are equal to or less than zero.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Represents the minimum amount of cumulative core earnings which was used to calculate the incentive fee payable.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage multiplied to arrive at difference of the first value which is affecting calculation of incentive fees.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage multiplied to arrive at the first value which is affecting calculation of incentive fees.

+ References

No definition available.

+ Details

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- Definition

Represents the period whose fiscal quarters is considered to arrive at the first value which is affecting the calculation of incentive fees.

+ References

No definition available.

+ Details

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- Definition

Represents the previous period to calculate the product of weighted average price per share and weighted average number of shares of common stock and other shares.

+ References

No definition available.

+ Details

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- Definition

Represents the previous period for which core earnings are considered to arrive at the first value which is affecting calculation of incentive fees.

+ References

No definition available.

+ Details

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- Definition

Related Party Transactions, Management Fee Look Back Period

+ References

No definition available.

+ Details

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- Definition

Related Party Transactions, Management Fee Renewal Term

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(c))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Balance Type:	debit
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- Definition

Amount of the contractual principal due at the origination of the mortgage loan (face amount).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

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RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Oct. 31, 2018	Aug. 31, 2018	May 31, 2018
Related Party Transaction [Line Items]
Related Party Transactions, Management Fee Renewal Term	1 year
Related Party Transactions, Management Fee Look Back Period	24 months
Outstanding Principal	$ 1,534,743,000	$ 1,737,286,000
Mortgage Loans on Real Estate, Commercial and Consumer, Net	$ 1,524,873,000	1,726,283,000
Credit support fee, percent			1.50%
Credit surrport fee, Average outstanding amount threshold			$ 75,000,000
Ares Management
Related Party Transaction [Line Items]
Credit support fee incurred			362,000
Affiliated Entity
Related Party Transaction [Line Items]
Base management fees as a percentage of stockholders' equity per annum	1.50%
Incentive fee payable	$ 0
Percentage multiplied to arrive at first value affecting calculation of incentive fees	20.00%
Previous period for which core earnings are considered to arrive at first value affecting calculation of incentive fees	12 months
Previous period for product of weighted average price per share and weighted average number of shares of common stock and other shares	12 months
Percentage multiplied to arrive at difference of first value affecting calculation of incentive fees	8.00%
Period whose fiscal quarters are considered to arrive at first value affecting calculation of incentive fees	12 months
Minimum cumulative core earnings	$ 0
Revenue from Related Parties	1,200,000	$ 381,000	$ 348,000
ILLINOIS \| Mezzanine Loan \| Mixed-use
Related Party Transaction [Line Items]
Outstanding Principal						$ 25,000,000.0
Mortgage Loans on Real Estate, Commercial and Consumer, Net	974,000
ILLINOIS \| Mezzanine Loan \| Mixed-use \| Ares Management
Related Party Transaction [Line Items]
Outstanding Principal						15,300,000.0
ILLINOIS \| Mezzanine Loan \| Mixed-use \| Affiliated Entity
Related Party Transaction [Line Items]
Outstanding Principal						$ 9,700,000.0
HAWAII \| Pre-Constructions Mezzanine Loan \| Residential
Related Party Transaction [Line Items]
Outstanding Principal					$ 12,000,000.0
Mortgage Loans on Real Estate, Commercial and Consumer, Net	4,700,000
HAWAII \| Pre-Constructions Mezzanine Loan \| Residential \| Ares Management
Related Party Transaction [Line Items]
Outstanding Principal					8,000,000.0
HAWAII \| Pre-Constructions Mezzanine Loan \| Residential \| Affiliated Entity
Related Party Transaction [Line Items]
Outstanding Principal					$ 4,000,000.0
FLORIDA \| Residential \| Senior Mortgage Loans
Related Party Transaction [Line Items]
Outstanding Principal				$ 22,000,000.0
Mortgage Loans on Real Estate, Commercial and Consumer, Net	17,500,000
FLORIDA \| Residential \| Senior Mortgage Loans \| Ares Management
Related Party Transaction [Line Items]
Outstanding Principal				17,500,000.0
FLORIDA \| Residential \| Senior Mortgage Loans \| Affiliated Entity
Related Party Transaction [Line Items]
Outstanding Principal				4,500,000.0
NEW YORK \| Mezzanine Loan \| Residential
Related Party Transaction [Line Items]
Outstanding Principal				23,300,000.0
Mortgage Loans on Real Estate, Commercial and Consumer, Net	$ 10,800,000
NEW YORK \| Mezzanine Loan \| Residential \| Ares Management
Related Party Transaction [Line Items]
Outstanding Principal				14,000,000.0
NEW YORK \| Mezzanine Loan \| Residential \| Affiliated Entity
Related Party Transaction [Line Items]
Outstanding Principal				$ 9,300,000.0