Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 32,615	$ 6,475	$ 13,069
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	91,581	93,787	97,171
Amortization of above and below market leases	(313)	(402)	(556)
Shares issued as compensation	337	337
Gain on sale of property	(41,928)
Equity in income of non-consolidated REITs			(6,793)
Decrease in allowance for doubtful accounts and write-off of accounts receivable	(13)	(71)	(50)
Changes in operating assets and liabilities:
Tenant rent receivables	(3,792)	158	(765)
Straight-line rents	(1,685)	(8,876)	381
Lease acquisition costs	(2,123)	(3,999)	(1,193)
Prepaid expenses and other assets	(129)	2,313	(1,940)
Accounts payable and accrued expenses	7,785	3,910	(4,077)
Accrued compensation	518	357	(598)
Tenant security deposits	(669)	3,027	936
Payment of deferred leasing commissions	(13,735)	(15,101)	(15,383)
Net cash provided by operating activities	68,449	81,915	80,202
Cash flows from investing activities:
Property improvements, fixtures and equipment	(77,919)	(70,746)	(51,057)
Investment in non-consolidated REITs			74,931
Distributions in excess of earnings from non-consolidated REITs			710
Investment in related party mortgage loan receivable		(2,400)
Repayment of related party mortgage loan receivable		52,060	1,060
Proceeds received on sales of real estate assets	88,958
Proceeds received from liquidating trust		1,470
Net cash provided by (used in) investing activities	11,039	(19,616)	25,644
Cash flows from financing activities:
Distributions to stockholders	(38,628)	(38,603)	(49,326)
Borrowings under bank note payable	105,000	45,000	38,000
Repayments of bank note payable	(101,500)	(70,000)	(91,000)
Repayment on term loan payable	(50,000)
Deferred financing costs		(83)	(2,162)
Net cash used in financing activities	(85,128)	(63,686)	(104,488)
Net increase (decrease) in cash, cash equivalents and restricted cash	(5,640)	(1,387)	1,358
Cash, cash equivalents and restricted cash, beginning of year	9,790	11,177	9,819
Cash, cash equivalents and restricted cash, end of period	4,150	9,790	11,177
Cash paid for:
Interest	33,060	34,470	35,885
Taxes on income	477	508	485
Non-cash investing and financing activities:
Accrued costs for purchase of real estate assets	$ 8,625	$ 11,012	$ 7,361