Line Of Credit Facility, Accordion Feature, Maximum Borrowing Capacity

No definition available.

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Period Type:	instant

- Definition

Line Of Credit Facility, Duration Of Extension Option

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Extension Fee Percentage

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Number Of Extension Options

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Period Type:	instant

- Definition

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

+ References

+ Details

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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

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of increase (decrease) of the credit facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

The cash inflow from borrowings to finance the cost of construction.

+ References

+ Details

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

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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Period Type:	duration

- Details

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Indebtedness - Additional Information (Details)											1 Months Ended	9 Months Ended
Indebtedness - Additional Information (Details)	Oct. 12, 2018 USD ($)	Jul. 27, 2018 USD ($)	Jul. 12, 2018 USD ($)	Jun. 29, 2018 USD ($)	Jun. 14, 2018 USD ($)	Jun. 01, 2018 USD ($)	May 31, 2018 USD ($)	Mar. 27, 2018 USD ($)	Jan. 22, 2018	Oct. 26, 2017 USD ($) extension	Oct. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Aug. 28, 2018 USD ($)	Mar. 28, 2018 USD ($)	Dec. 31, 2017 USD ($)
Columbus Village
Indebtedness
Repayment of debt								$ 8,300,000
Southgate Square
Indebtedness
Face amount							$ 22,000,000
249 Central Park Retail
Indebtedness
Face amount					$ 35,000,000
Johns Hopkins Village
Indebtedness
Face amount		$ 53,000,000.0
Effective interest rate		4.19%
LIBOR \| Sandbridge Commons
Indebtedness
Stated interest rate, basis spread on variable rate									1.75%
LIBOR \| Southgate Square
Indebtedness
Stated interest rate, basis spread on variable rate							1.60%
LIBOR \| River City
Indebtedness
Stated interest rate, basis spread on variable rate						1.50%
LIBOR \| 249 Central Park Retail
Indebtedness
Stated interest rate, basis spread on variable rate					1.60%
LIBOR \| Johns Hopkins Village
Indebtedness
Stated interest rate, basis spread on variable rate		1.25%
Revolving Credit Facility
Indebtedness
Interest rate on credit facility as of end of period												3.81%
Term Loan Facility
Indebtedness
Interest rate on credit facility as of end of period												3.76%
Minimum \| Revolving Credit Facility
Indebtedness
Basis points on unused commitment fee										0.15%
Minimum \| Revolving Credit Facility \| LIBOR
Indebtedness
Stated interest rate, basis spread on variable rate										1.40%
Minimum \| Term Loan Facility \| LIBOR
Indebtedness
Stated interest rate, basis spread on variable rate										1.35%
Maximum \| Revolving Credit Facility
Indebtedness
Basis points on unused commitment fee										0.25%
Maximum \| Revolving Credit Facility \| LIBOR
Indebtedness
Stated interest rate, basis spread on variable rate										2.00%
Maximum \| Term Loan Facility \| LIBOR
Indebtedness
Stated interest rate, basis spread on variable rate										1.95%
Construction loans
Indebtedness
Borrowings under construction loans												$ 59,000,000
Construction loans \| Line of credit \| River City
Indebtedness
Aggregate capacity under the credit facility						$ 16,300,000.0
Construction loans \| Line of credit \| Brooks Crossing
Indebtedness
Aggregate capacity under the credit facility				$ 15,600,000.0
Construction loans \| Line of credit \| Market at Mill Creek
Indebtedness
Aggregate capacity under the credit facility			$ 16,200,000.0
Construction loans \| Line of credit \| LIBOR \| Brooks Crossing
Indebtedness
Stated interest rate, basis spread on variable rate				1.60%
Construction loans \| Line of credit \| LIBOR \| Market at Mill Creek
Indebtedness
Stated interest rate, basis spread on variable rate			1.55%
Secured Debt \| Lexington Square
Indebtedness
Face amount													$ 15,000,000
Interest rate													4.50%
Secured Debt \| Line of credit \| Subsequent Event \| Lightfoot Marketplace
Indebtedness
Aggregate capacity under the credit facility	$ 17,900,000.0
Proceeds from lines of credit	$ 10,500,000
Operating Partnership \| New Credit Facility
Indebtedness
Aggregate capacity under the credit facility										$ 300,000,000				$ 330,000,000.0
Operating Partnership \| New Credit Facility \| Revolving Credit Facility
Indebtedness
Aggregate capacity under the credit facility										150,000,000
Accordion feature maximum borrowing capacity										$ 450,000,000
Number of extension options \| extension										2
Duration of extension option										6 months
Extension fee percentage										0.075%
Credit facility, amount outstanding												102,000,000			$ 66,000,000
Operating Partnership \| New Credit Facility \| Revolving Credit Facility \| Subsequent Event
Indebtedness
Increase in borrowing											$ 16,000,000
Operating Partnership \| New Credit Facility \| Term Loan Facility
Indebtedness
Aggregate capacity under the credit facility										$ 150,000,000				$ 180,000,000.0
Credit facility, amount outstanding												$ 180,000,000			$ 150,000,000
Initial tranche \| Secured Debt \| Line of credit \| Subsequent Event \| Lightfoot Marketplace
Indebtedness
Effective interest rate	4.77%
Initial tranche \| Secured Debt \| Line of credit \| Subsequent Event \| LIBOR \| Lightfoot Marketplace
Indebtedness
Stated interest rate, basis spread on variable rate	1.75%
Stabilization of property \| Initial tranche \| Secured Debt \| Line of credit \| Subsequent Event \| Lightfoot Marketplace
Indebtedness
Effective interest rate	4.62%
Stabilization of property \| Initial tranche \| Secured Debt \| Line of credit \| Subsequent Event \| LIBOR \| Lightfoot Marketplace
Indebtedness
Stated interest rate, basis spread on variable rate	1.60%