CONSOLIDATED STATEMENTS OF CASH FLOWS - Supplemental Disclosures - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CASH AND CASH EQUIVALENTS AND RESTRICTED DEPOSITS AT END OF PERIOD
Cash and cash equivalents	$ 9,002	$ 21,212	$ 12,490
Restricted deposits	8,380	8,853	8,063
TOTAL CASH AND CASH EQUIVALENTS AND RESTRICTED DEPOSITS, END OF YEAR	17,382	30,065	20,553
SCHEDULE OF CASH FLOW INFORMATION
Cash paid during the period for interest, net of capitalized interest	17,684	17,575	17,847
SUPPLEMENTARY SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends reinvested	6,145	5,711	5,163
Dividends declared and not paid	2,465	2,281	2,101
UPREIT distributions declared and not paid	4,653	4,547	4,335
UPREIT units converted to REIT common shares	28		133
Shares issued pursuant to trustee compensation plan	62	57	59
Acquisition of assets in exchange for the issuance of noncontrolling interest units in UPREIT		7,819	14,733
Increase in land improvements due to increase in special assessments payable	639	447	1,300
Unrealized gain on interest rate swaps	67	35	80
Acquisition of assets with new financing			5,052
Acquisition of assets through assumption of debt and liabilities		$ 2,680	1,427
Capitalized interest and real estate taxes related to construction in progress	$ 138		142
Acquisition of assets with accounts payable			$ 416