Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net loss	$ (2,355,925)	$ (3,902,525)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	7,346,640	7,723,372
Stock compensation	410,760	388,602
Bad debt expense	37,205	(54,405)
Gain on sale of real estate assets, net	(2,237,423)	(2,121,453)
Impairment of real estate assets		700,000
Amortization of financing costs	956,956	1,081,520
Amortization of above-market leases	79,013	139,417
Amortization of below-market leases	(240,882)	(345,948)
Straight-line rent adjustment	(452,427)	(660,705)
Changes in operating assets and liabilities:
Other assets	487,961	1,000,323
Accounts payable and accrued liabilities	267,164	(1,008,736)
Accrued real estate taxes	29,155	(473,886)
Net cash provided by operating activities	4,328,197	2,465,576
Cash flows from investing activities:
Real estate acquisitions	(16,810,985)	(15,774,855)
Additions to buildings and tenant improvements	(3,156,986)	(3,713,626)
Additions to deferred leasing costs	(407,653)	(710,721)
Proceeds from sales of real estate	16,463,558	8,560,357
Restricted cash	416,678	2,992,873
Net cash used in investing activities	(3,495,388)	(8,645,972)
Cash flows from financing activities:
Proceeds from mortgage notes payable, net of issuance costs	13,342,994	18,979,585
Repayment of mortgage notes payable	(9,656,060)	(9,217,047)
Contributions from noncontrolling interests net of distributions paid	1,592,414	197,148
Repurchase of common stock	(17,394)	(55,023)
Dividends paid to stockholders	(3,620,879)	(3,347,690)
Net cash (used in) provided by financing activities	(512,425)	4,256,973
Net increase (decrease) in cash and cash equivalents	320,384	(1,923,423)
Cash and cash equivalents - beginning of period	3,116,147	6,626,423
Cash and cash equivalents - end of period	3,436,531	4,703,000
Supplemental disclosure of cash flow information:
Interest paid Series B preferred stock	3,355,983	5,080,417
Interest paid-mortgage notes payable	5,441,424	5,449,481
Non-cash investing and financing activities:
Reinvestment of cash dividends	1,095,434	1,795,040
Accrual of dividends payable		1,155,498
Redeemable Convertible Preferred Stock Series B [Member]
Cash flows from financing activities:
Series B preferred stock costs	(153,500)
Redemption of mandatorily redeemable Series B preferred stock	$ (2,000,000)	$ (2,300,000)