Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities:
Net loss	$ (1,919)	$ (980)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	6,767	6,815
Noncash rental revenue including straight-line rents	(856)	(1,118)
Change in fair value of financial instruments	719
Stock-based compensation expense	505	282
Amortization of debt issuance costs	407	212
Gain on sales of real estate assets	(342)	(699)
Deferred income taxes		(259)
Changes in assets and liabilities:
Other assets	1,569	2,223
Accounts payable and accrued liabilities	(505)	(581)
Deferred revenue	(1,659)	(1,111)
Other liabilities	685	(330)
Net cash provided by operating activities	5,371	4,454
Investing activities:
Acquisitions of land and buildings	(60,100)	(13,670)
Additions to real estate assets	(10,388)	(5,825)
Proceeds from sales of real estate assets, net of expenses	3,141	880
Deferred leasing costs and other	(883)	(958)
Changes in short-term investments, net		1,011
Net cash used in investing activities	(68,230)	(18,562)
Financing activities:
Proceeds from sale of common stock	108,676	2,500
Dividends paid to stockholders	(4,562)
Principal payments on mortgage loans	(2,540)	(5,483)
Payment of debt issuance costs	(807)	(362)
Net repayment on revolving lines of credit		(3,000)
Proceeds from mortgage loans		20,100
Proceeds from exercise of stock options	168	80
Net cash provided by financing activities	100,935	13,835
Net increase (decrease) in cash and cash equivalents	38,076	(273)
Cash and cash equivalents at beginning of period	28,124	4,837
Cash and cash equivalents at end of period	$ 66,200	$ 4,564