CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Real estate properties, net of accumulated depreciation	$ 30,837	$ 24,094
Deferred mortgage costs	$ 880	$ 1,160
Preferred shares, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred shares, authorized (in shares)	2,000,000	2,000,000
Preferred shares, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, issued (in shares)	16,432,000	15,638,000
Common stock, authorized (in shares)	300,000,000	300,000,000
Mortgages
Debt Instrument [Line Items]
Deferred mortgage costs	$ 563	$ 823
Junior subordinated notes
Debt Instrument [Line Items]
Deferred mortgage costs	$ 317	$ 337