Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
REVENUES
Rental revenues and tenant expense reimbursements	$ 186,884	$ 171,022	$ 151,657
Total revenues	186,884	171,022	151,657
COSTS AND EXPENSES
Property operating expenses	49,096	44,201
Property operating expenses			39,988
Depreciation and amortization	45,875	44,015	40,816
General and administrative	23,489	23,924	21,503
Acquisition costs	271	45	124
Total costs and expenses	118,731	112,185	102,431
OTHER INCOME (EXPENSE)
Interest and other income	873	3,815	3,664
Interest expense, including amortization	(15,997)	(16,338)	(18,211)
Loss on extinguishment of debt	0	(189)	0
Gain on sales of real estate investments	26,766	9,391	28,610
Total other income (expense)	11,642	(3,321)	14,063
Net income	79,795	55,516	63,289
Allocation to participating securities	(400)	(351)	(401)
Net income available to common stockholders, net of redemption of preferred stock and preferred stock dividends	$ 79,395	$ 55,165	$ 62,888
EARNINGS PER COMMON SHARE – BASIC AND DILUTED:
Net income available to common stockholders - basic, net of redemption of preferred stock and preferred stock dividends (in dollars per share)	$ 1.17	$ 0.86	$ 1.09
Net income available to common stockholders - diluted, net of redemption of preferred stock and preferred stock dividends (in dollars per share)	$ 1.16	$ 0.85	$ 1.09
Basic Weighted Average Common Shares Outstanding (in shares)	67,762,927	64,428,406	57,486,399
Diluted Weighted Average Common Shares Outstanding (in shares)	68,170,066	64,722,976	57,486,399