Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenues from rental properties	$ 34,650,000	$ 33,287,000
Interest on notes and mortgages receivable	713,000	762,000
Total revenues	35,363,000	34,049,000
Operating expenses:
Property costs	4,935,000	5,495,000
Impairments	1,031,000	771,000
Environmental	221,000	903,000
General and administrative	4,068,000	4,062,000
Depreciation and amortization	7,097,000	6,099,000
Total operating expenses	17,352,000	17,330,000
Gain (loss) on dispositions of real estate	869,000	(51,000)
Operating income	18,880,000	16,668,000
Other income (expense), net	495,000	205,000
Interest expense	(6,675,000)	(5,946,000)
Net earnings	$ 12,700,000	$ 10,927,000
Basic earnings per common share:
Net earnings	$ 0.30	$ 0.26
Diluted earnings per common share:
Net earnings	$ 0.30	$ 0.26
Weighted average common shares outstanding:
Basic	41,383	40,873
Diluted	41,391	40,891