Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income		$ 65,392	$ 61,649	$ 50,316
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on early extinguishment of debt		648	0	0
Gain on sale of property		0	0	(278)
Depreciation and amortization of deferred leasing costs		48,969	50,272	51,126
Amortization of deferred debt costs		1,985	1,710	1,570
Non cash compensation costs of stock grants and options		1,521	1,562	1,438
Credit losses (recoveries) on operating lease receivables		(88)	812	5,212
(Increase) decrease in accounts receivable and accrued income		2,424	5,446	(17,818)
Additions to deferred leasing costs		(2,716)	(1,814)	(8,050)
(Increase) decrease in other assets		4,511	(2,820)	5
Increase (decrease) in accounts payable, accrued expenses and other liabilities		524	(285)	861
Increase (decrease) in deferred income		(2,019)	1,895	(6,013)
Net cash provided by operating activities		121,151	118,427	78,369
Cash flows from investing activities:
Acquisitions of real estate investments	[1],[2],[3]	0	(9,011)	0
Additions to real estate investments		(15,781)	(21,023)	(20,547)
Additions to development and redevelopment projects		(101,107)	(25,884)	(35,983)
Proceeds from sale of properties		0	0	376
Net cash used in investing activities		(116,888)	(55,918)	(56,154)
Cash flows from financing activities:
Proceeds from mortgage notes payable		199,750	0	52,100
Repayments on mortgage notes payable		(174,096)	(42,641)	(45,654)
Proceeds from term loan facility		0	25,000	0
Proceeds from revolving credit facility		155,000	46,000	90,000
Repayments on revolving credit facility		(97,000)	(44,500)	(73,000)
Proceeds from construction loans payable		0	10,917	35,883
Payments of debt extinguishment costs		(593)	0	0
Additions to deferred debt costs		(9,869)	(6,393)	(1,206)
Proceeds from the issuance of:
Common stock		8,173	14,425	8,264
Partnership units	[1],[2],[3]	1,322	2,398	1,677
Distributions to:
Distributions to preferred stockholders		(11,194)	(11,194)	(11,194)
Common stockholders		(55,523)	(50,963)	(49,383)
Noncontrolling interests		(21,548)	(17,821)	(16,751)
Net cash used in financing activities		(5,578)	(74,771)	(9,264)
Net increase (decrease) in cash and cash equivalents		(1,315)	(12,262)	12,951
Cash and cash equivalents, beginning of year		14,594	26,856	13,905
Cash and cash equivalents, end of year		13,279	14,594	26,856
Supplemental disclosure of cash flow information:
Cash paid for interest		40,725	44,575	44,990
Accrued capital expenditures included in accounts payable, accrued expenses, and other liabilities		19,006	5,906	4,327
Series D Cumulative Redeemable Preferred Stock
Distributions to:
Distributions to preferred stockholders		(4,594)	(4,593)	(4,594)
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 $21,500 in connection with the contribution of the Twinbrook Quarter leasehold interest in exchange for limited partnership units.

[2] 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.

[3] 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, half of which units remain in escrow.