CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018		Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Debt Instrument [Line Items]
Real estate properties, net of accumulated depreciation	$ 24,094				$ 22,271
Deferred mortgage costs	$ 1,160				$ 1,451
Preferred shares, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Preferred shares, authorized (in shares)	2,000,000	2,000,000	2,000,000	2,000,000	2,000,000		2,000,000	2,000,000	2,000,000
Preferred shares, issued (in shares)	0	0	0	0	0		0	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Common stock, issued (in shares)	15,638,000	15,227,000	15,172,000	15,175,000	15,038,000		15,048,000	14,410,000	13,575,000
Common stock, authorized (in shares)	300,000,000	300,000,000	300,000,000	300,000,000	300,000,000		300,000,000	300,000,000	300,000,000
Shares of beneficial interest, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Shares of beneficial interest, issued (in shares)	15,638,000	15,227,000	15,172,000	15,175,000	15,038,000		15,048,000	14,410,000	13,575,000
Real estate investment property, net	$ 169,689	$ 151,046	$ 152,106	$ 175,785	$ 176,942	[1]	$ 160,019	$ 120,539	$ 121,525
Cash and cash equivalents	22,699	9,371	8,305	11,794	23,539	[1]	18,185	15,236	19,816
Deposits and escrows	1,986	2,877	2,994	2,609	3,299	[1]	3,469	2,286	1,725
Other assets	5,296	4,183	4,304	3,505	1,596	[1]	1,682	1,383	1,259
Mortgages payable	133,215	116,855	136,559	137,239	137,946	[1]	123,817	95,623	96,091
Accounts payable and accrued liabilities	20,772	$ 22,166	$ 21,057	$ 17,926	16,182	[1]	$ 14,912	$ 14,587	$ 14,238
Mortgages
Debt Instrument [Line Items]
Deferred mortgage costs	823				1,904
Junior subordinated notes
Debt Instrument [Line Items]
Deferred mortgage costs	$ 337				$ 357

[1] * Amounts restated See footnotes 2 and 16 for more information.