Represents amount of indirect ownership in business acquisition.

No definition available.

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- Definition

The amount represents the fund capital cal.

+ References

No definition available.

+ Details

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- Definition

The description of exercise of options.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership interest on investments.

+ References

No definition available.

+ Details

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- Definition

Date of maturity or expiration of arrangements with an unaffiliated lender (for example, but not limited to, leasing and debt arrangements between related parties), in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Publisher FASB
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-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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Balance Type:	debit
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Aggregate dividends declared during the period for each share of preferred stock outstanding.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Balance Type:	na
Period Type:	duration

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Millions					1 Months Ended					12 Months Ended
	Jan. 23, 2019	Jan. 11, 2019	Jan. 01, 2019	Oct. 04, 2018	Feb. 25, 2019	Aug. 13, 2018	Jan. 31, 2018	Dec. 29, 2017	Dec. 29, 2016	Dec. 31, 2018	Jan. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							1,056,211
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			3 months
Due from Related Parties	$ 0.8
Related Party Transaction, Rate								15.00%
Unaffiliated Lender Transaction Date									Dec. 29, 2016
Description Of Exercise Of Options						the Company received the right to exercise an option to purchase, at the greater of a 10 basis point discount to fair market value or 15% internal rate of return for Fund III, up to a 100% common membership interest in BR Vickers JV Member.
Subsequent Event [Member]
Business Acquisition Indirect Ownership, Amount											$ 7.8
Related Party Transaction, Rate	10.00%
Subsequent Event [Member] \| BRG chapel Hill [Member]
Due from Related Parties	$ 7.8
Equity Method Investment, Ownership Percentage	100.00%
Related Party Transaction, Rate	10.00%
Unaffiliated Lender Transaction Date	Jan. 23, 2021
Subsequent Event [Member] \| ARIUM Pine Lakes [Member] \| Maximum [Member]
Indirect Ownership Interest Percentage Of Investment											100.00%
Subsequent Event [Member] \| ARIUM Pine Lakes [Member] \| Minimum [Member]
Indirect Ownership Interest Percentage Of Investment											85.00%
Subsequent Event [Member] \| BRG Vickers [Member]
Description Of Exercise Of Options					the Company will receive an additional 5.0 basis point discount purchase option and will have the right to exercise an option to purchase, at the greater of a 17.5 basis point discount to fair market value or 15% internal rate of return for Fund III, up to a 100% common membership interest in BR Vickers JV Member.
Capital Call amount					$ 1.2
Long-term Incentive Plan Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				80,798
Long-term Incentive Plan Units [Member] \| Performance Based LTIP Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							125,165
Long-term Incentive Plan Units [Member] \| Incentive Plans 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				3,165			6,263
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period										3 years 2 months 12 days
Long-term Incentive Plan Units [Member] \| Incentive Plans 2014 [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			6,836
Long-term Incentive Plan Units [Member] \| Incentive Plans 2014 [Member] \| Subsequent Event [Member] \| Time-based LTIP Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			196,023
Long-term Incentive Plan Units [Member] \| Incentive Plans 2014 [Member] \| Subsequent Event [Member] \| Performance Based LTIP Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			294,031
Series B Preferred Stock [Member] \| Subsequent Event [Member] \| Monthly Dividends [Member]
Preferred Stock, Dividends Per Share, Declared		$ 5.00