Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income		$ 69,026	$ 65,392	$ 61,649
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on early extinguishment of debt		0	648	0
Depreciation and amortization of deferred leasing costs		48,430	48,969	50,272
Amortization of deferred debt costs		2,250	1,985	1,710
Non cash compensation costs of stock grants and options		1,421	1,521	1,562
Credit losses (recoveries) on operating lease receivables		534	(88)	812
(Increase) decrease in accounts receivable and accrued income		(243)	2,424	5,446
Additions to deferred leasing costs		(5,607)	(2,716)	(1,814)
(Increase) decrease in other assets		453	4,511	(2,820)
Increase (decrease) in accounts payable, accrued expenses and other liabilities		1,884	524	(285)
Increase (decrease) in deferred income		(421)	(2,019)	1,895
Net cash provided by operating activities		117,727	121,151	118,427
Cash flows from investing activities:
Acquisitions of real estate investments	[1],[2],[3]	0	0	(9,011)
Additions to real estate investments		(26,196)	(15,781)	(21,023)
Additions to development and redevelopment projects		(177,485)	(101,107)	(25,884)
Net cash used in investing activities		(203,681)	(116,888)	(55,918)
Cash flows from financing activities:
Proceeds from mortgage notes payable		15,300	199,750	0
Repayments on mortgage notes payable		(42,332)	(174,096)	(42,641)
Proceeds from term loan facility		0	0	25,000
Proceeds from revolving credit facility		160,000	155,000	46,000
Repayments on revolving credit facility		(48,000)	(97,000)	(44,500)
Proceeds from construction loans payable		82,635	0	10,917
Payments of debt extinguishment costs		0	(593)	0
Additions to deferred debt costs		(404)	(9,869)	(6,393)
Proceeds from the issuance of:
Common stock		2,238	8,173	14,425
Partnership units	[1],[2],[3]	1,505	1,322	2,398
Distributions to:
Distributions to preferred stockholders		(11,194)	(11,194)	(11,194)
Common stockholders		(56,722)	(55,523)	(50,963)
Noncontrolling interests		(21,944)	(21,548)	(17,821)
Net cash provided by (used in) financing activities		81,082	(5,578)	(74,771)
Net decrease in cash and cash equivalents		(4,872)	(1,315)	(12,262)
Cash and cash equivalents, beginning of year		13,279	14,594	26,856
Cash and cash equivalents, end of year		8,407	13,279	14,594
Supplemental disclosure of cash flow information:
Cash paid for interest		46,083	40,725	44,575
Accrued capital expenditures included in accounts payable, accrued expenses, and other liabilities		31,166	19,006	5,906
Series D Cumulative Redeemable Preferred Stock
Distributions to:
Distributions to preferred stockholders		(4,594)	(4,594)	(4,593)
Series E Cumulative Redeemable Preferred Stock
Distributions to:
Distributions to preferred stockholders		$ (6,600)	$ (6,600)	$ (6,600)

[1] The 2021 acquisition of real estate and proceeds from the issuance of partnership units each excludes $79,300 in connection with the contribution of Twinbrook Quarter by the  B. F. Saul Real Estate Investment Trust in exchange for limited partnership units.

[2] The 2021 acquisition of real estate and proceeds from the issuance of partnership units each excludes $21,500 in connection with the contribution of the Twinbrook Quarter leasehold interest in exchange for limited partnership units.

[3] The 2021 acquisition of real estate and proceeds from the issuance of partnership units each excludes $4,320 in connection with the issuance of additional limited partnership units to B. F. Saul Real Estate Investment Trust as additional consideration pursuant to the terms of the 2016 contribution agreement, as amended, related to Ashbrook Marketplace.