CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net income	$ 274,341	$ 590,619
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	1,989,761	1,438,908
Unrealized gain on marketable equity securities	(155,139)	(193,705)
Amortization of loan procurement costs	199,797	200,819
Stock-based compensation	126,035	102,989
Changes in operating assets and liabilities:
Accounts receivable	57,557	(96,474)
Prepaid expenses and other assets	(26,314)	(37,436)
Accounts payable and accrued expenses	(468,710)	(298,390)
Net cash provided by operating activities	1,997,328	1,707,330
Cash flows from investing activities
Construction	(1,404,269)	(1,437,419)
Improvements and equipment additions	(203,077)	(58,186)
Acquisition of self storage properties		(6,287,082)
Net cash used in investing activities	(1,607,346)	(7,782,687)
Cash flows from financing activities
Line of credit borrowing	230,000	4,914,000
Principal payments on note payable	(491,081)	(470,955)
Issuance of common stock under rights offering, net of expenses		6,280,987
Dividends paid	(2,427,023)	(2,107,376)
Net cash (used in) provided by financing activities	(2,688,104)	8,616,656
Net (decrease) increase in cash, cash equivalents, and restricted cash	(2,298,122)	2,541,299
Cash, cash equivalents, and restricted cash, beginning of period	4,253,565	1,712,266
Cash, cash equivalents, and restricted cash, end of period	1,955,443	4,253,565
Supplemental cash flow and noncash information
Cash paid for interest	996,904	821,434
Supplemental disclosure of noncash activities:
Dividends payable	$ 358	$ 7,179