DEBT OBLIGATIONS - Schedule of Repayment of Debt (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Mortgage Payoff	$ 41,666	$ 47,605
Mortgages
Debt Instrument [Line Items]
Mortgage Payoff	29,462	31,879
Prepayment Charges	0	822
Avalon, Pensacola, FL \| Mortgages
Debt Instrument [Line Items]
Mortgage Payoff	$ 14,558
Interest Rate	4.29%
Prepayment Charges	$ 0
Silvana Oaks, N. Charleston, SC \| Mortgages
Debt Instrument [Line Items]
Mortgage Payoff	$ 14,904
Interest Rate	3.79%
Prepayment Charges	$ 0
Avalon - Supplemental, Pensacola, FL \| Mortgages
Debt Instrument [Line Items]
Mortgage Payoff		$ 2,903
Interest Rate		4.92%
Prepayment Charges		$ 29
Avondale Station, Decatur, GA \| Mortgages
Debt Instrument [Line Items]
Mortgage Payoff		$ 7,140
Interest Rate		3.74%
Prepayment Charges		$ 376
Avondale Station - supp1emental, Decatur, GA \| Mortgages
Debt Instrument [Line Items]
Mortgage Payoff		$ 6,866
Interest Rate		5.53%
Prepayment Charges		$ 277
Woodland Trails, LaGrange, GA \| Mortgages
Debt Instrument [Line Items]
Mortgage Payoff		$ 14,025
Interest Rate		4.36%
Prepayment Charges		$ 140
Ripco , Yonkers, NY \| Mortgages
Debt Instrument [Line Items]
Mortgage Payoff		$ 945
Interest Rate		5.25%
Prepayment Charges		$ 0

Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

Name:	us-gaap_PaymentsOfDebtExtinguishmentCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfSecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_MortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=brt_AvalonPensacolaFLMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=brt_SilvanaOaksNCharlestonSCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=brt_AvalonSupplementalPensacolaFLMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=brt_AvondaleStationDecaturGAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=brt_AvondaleStationSupp1ementalDecaturGAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=brt_WoodlandTrailsLaGrangeGAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=brt_RipcoYonkersNYMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: