Indebtedness - Additional Information (Details) $ in Thousands																									12 Months Ended
	Dec. 20, 2022 USD ($) extension_option	Dec. 06, 2022 USD ($)	Sep. 27, 2022 USD ($)	Aug. 25, 2022 USD ($) extension_option	Aug. 23, 2022 USD ($) extension_option	Aug. 15, 2022 USD ($)	Jul. 22, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 29, 2022 USD ($)	Apr. 25, 2022 USD ($)	Apr. 01, 2022 USD ($)	Mar. 03, 2022 USD ($)	Jan. 19, 2022 USD ($)	Jan. 14, 2022 USD ($)	Jan. 05, 2022 USD ($)	Dec. 21, 2021 USD ($)	Sep. 30, 2021 USD ($)	Aug. 24, 2021 USD ($)	May 05, 2021 USD ($) extension_option	Apr. 15, 2021 USD ($)	Mar. 08, 2021 USD ($)	Jan. 28, 2021 USD ($)	Jan. 15, 2021 USD ($)	Sep. 22, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Aug. 22, 2022 USD ($)	Jan. 04, 2022 USD ($)	Jan. 07, 2021 USD ($)
Debt Instrument [Line Items]
Indebtedness, net																									$ 1,068,261	$ 917,556
Constellation Energy Building
Debt Instrument [Line Items]
Membership interest acquired														79.00%
Economic interest acquired														11.00%
Acquisition, assumption of debt														$ 156,100
Debt, face value														$ 175,000
Harbor Point Parcel 3 Partnership
Debt Instrument [Line Items]
Outstanding letters of credit																														$ 15,000	$ 15,000
Payments to acquire equity method investments															$ 2,600
Nexton Square
Debt Instrument [Line Items]
Repayment of debt																						$ 2,000
Indebtedness, net																						$ 20,100
Floor interest rate																						0.0025
Acquisition, assumption of debt																								$ 22,900
4525 Main Street and Encore Apartments
Debt Instrument [Line Items]
Indebtedness, net																							$ 57,000
Increase (decrease) in long term debt																							$ 1,500
Stated interest rate																							2.93%
Greenbrier Square
Debt Instrument [Line Items]
Stated interest rate																		3.74%
Acquisition, assumption of debt																		$ 20,000
Thames Street Wharf
Debt Instrument [Line Items]
Indebtedness, net																	$ 71,000
Stated interest rate																	2.35%
Southgate Square
Debt Instrument [Line Items]
Debt, face value																$ 27,100
Extinguishment of debt																				$ 19,500
Floor interest rate																0.0020
Secured Overnight Financing Rate (SOFR) | Southern Post
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate				2.25%
Bloomberg Short-Term Bank Yield | Constellation Energy Building
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate														1.50%
Bloomberg Short-Term Bank Yield | Thames Street Wharf
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate																	1.30%
LIBOR | Chronicle Mill
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate																			3.00%
LIBOR | Nexton Square
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate																						2.25%
LIBOR | Southgate Square
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate																1.90%
Line of Credit | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Aggregate capacity under the credit facility					$ 550,000
Accordion feature maximum borrowing capacity					1,000,000
Line of Credit | M&T Term Loan Agreement
Debt Instrument [Line Items]
Aggregate capacity under the credit facility		$ 100,000
Accordion feature maximum borrowing capacity		200,000
New Credit Facility | Harbor Point Parcel 3 Partnership
Debt Instrument [Line Items]
Outstanding letters of credit																															$ 15,000
Secured Debt | Delray Beach Plaza
Debt Instrument [Line Items]
Extinguishment of debt													$ 14,100
Secured Debt | Red Mill West Commons
Debt Instrument [Line Items]
Extinguishment of debt												$ 10,300
Secured Debt | Hoffler Place
Debt Instrument [Line Items]
Extinguishment of debt											$ 18,400
Secured Debt | Summit Place
Debt Instrument [Line Items]
Extinguishment of debt										$ 23,100
Secured Debt | Harbor Point Parcel 4
Debt Instrument [Line Items]
Extinguishment of debt										109,700
Secured Debt | North Point
Debt Instrument [Line Items]
Extinguishment of debt									$ 1,900
Secured Debt | Nexton Square
Debt Instrument [Line Items]
Repayment of debt								$ 20,100
Indebtedness, net								$ 22,500
Secured Debt | The Residences at Annapolis Junction
Debt Instrument [Line Items]
Extinguishment of debt							$ 84,400
Secured Debt | Hilltop Shopping Center
Debt Instrument [Line Items]
Extinguishment of debt						$ 9,400
Secured Debt | 1405 Point Street
Debt Instrument [Line Items]
Extinguishment of debt				$ 51,800
Secured Debt | Brooks Crossing Office
Debt Instrument [Line Items]
Extinguishment of debt				14,600
Secured Debt | One City Center properties
Debt Instrument [Line Items]
Extinguishment of debt				$ 23,600
Secured Debt | Liberty Apartments
Debt Instrument [Line Items]
Repayment of debt			$ 13,400
Indebtedness, net			$ 21,000
Secured Debt | Wills Wharf
Debt Instrument [Line Items]
Extinguishment of debt		64,300
Secured Debt | 249 Central Park Retail
Debt Instrument [Line Items]
Extinguishment of debt		16,100
Secured Debt | Fountain Plaza Retail
Debt Instrument [Line Items]
Extinguishment of debt		9,700
Secured Debt | South Retail
Debt Instrument [Line Items]
Extinguishment of debt		$ 7,100
Secured Debt | Gainesville Apartments
Debt Instrument [Line Items]
Number of extension options | extension_option	2
Duration of extension option	12 months
Repayment of debt	$ 29,600
Indebtedness, net	$ 30,000
Secured Debt | Delray Beach Plaza
Debt Instrument [Line Items]
Indebtedness, net																					$ 14,500
Secured Debt | Greenbrier Square
Debt Instrument [Line Items]
Stated interest rate																									3.74%
Secured Debt | Secured Overnight Financing Rate (SOFR) | Nexton Square
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate								1.95%																	1.95%
Secured Debt | Secured Overnight Financing Rate (SOFR) | Liberty Apartments
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate			1.50%																						1.50%
Secured Debt | Secured Overnight Financing Rate (SOFR) | Gainesville Apartments
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate	1.50%																								1.50%
Secured Debt | LIBOR | Delray Beach Plaza
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate																					3.00%
Secured Debt | LIBOR | Southgate Square
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate																									1.90%
Secured Debt | Minimum | Secured Overnight Financing Rate (SOFR) | Nexton Square
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate								0.30%
Construction Loans
Debt Instrument [Line Items]
Borrowings under construction loans																									$ 39,800	$ 23,400
Construction Loans | Southern Post
Debt Instrument [Line Items]
Number of extension options | extension_option				2
Duration of extension option				12 months
Indebtedness, net				$ 73,600
Construction Loans | Chronicle Mill
Debt Instrument [Line Items]
Number of extension options | extension_option																			2
Duration of extension option																			12 months
Indebtedness, net																			$ 35,100
Construction Loans | Harbor Point Parcel 3
Debt Instrument [Line Items]
Debt, face value										$ 161,500																	$ 180,400	$ 161,700
Construction Loans | LIBOR | Chronicle Mill
Debt Instrument [Line Items]
Floor interest rate																			0.0025
Revolving credit facility | Line of Credit | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Aggregate capacity under the credit facility					$ 250,000
Number of extension options | extension_option					2
Duration of extension option					6 months
Extension fee percentage					0.075%
Revolving credit facility | Line of Credit | Prior Credit Agreement
Debt Instrument [Line Items]
Aggregate capacity under the credit facility																													$ 150,000
Revolving credit facility | Line of Credit | M&T Term Loan Agreement
Debt Instrument [Line Items]
Duration of extension option		1 year
Extension fee percentage		0.075%
Revolving credit facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | M&T Term Loan Agreement
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate		1.00%
Revolving credit facility | Line of Credit | Federal Funds Rate | M&T Term Loan Agreement
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate		0.50%
Revolving credit facility | Line of Credit | Minimum | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Unused commitment fee					0.15%
Revolving credit facility | Line of Credit | Minimum | Secured Overnight Financing Rate (SOFR) | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate					1.30%
Revolving credit facility | Line of Credit | Maximum | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Unused commitment fee					0.25%
Revolving credit facility | Line of Credit | Maximum | Secured Overnight Financing Rate (SOFR) | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate					1.85%
Unsecured Debt | Line of Credit | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Aggregate capacity under the credit facility					$ 300,000
Unsecured Debt | Line of Credit | Prior Credit Agreement
Debt Instrument [Line Items]
Aggregate capacity under the credit facility																													$ 205,000
Unsecured Debt | Line of Credit | Minimum | Secured Overnight Financing Rate (SOFR) | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate					1.25%
Unsecured Debt | Line of Credit | Maximum | Secured Overnight Financing Rate (SOFR) | Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Stated interest rate, basis spread on variable rate					1.80%