Consolidated Statements of Cash Flows - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash flows from operating activities:      
Net loss $ (19,564,718) $ (51,206,803) $ (25,095,538)
Adjustments to reconcile net loss to net cash provided by operating activities:      
Depreciation and amortization 53,368,611 42,071,743 41,098,672
Change in deferred tax liability (2,025,869) (5,926,732) (806,083)
Accretion of fair market value adjustment of secured debt (110,942) (130,682) (131,611)
Amortization of debt issuance costs 1,676,309 3,586,381 3,996,676
Equity based compensation expense 2,907,808 1,738,873 404,540
Contingent earnout adjustment 12,619,744 (2,500,000) 200,000
Equity in loss of unconsolidated joint ventures 1,050,250 0 0
Unrealized foreign currency and derivative (gains) losses 467,989 (93,878) (797,999)
Net loss on extinguishment of debt 2,444,788 0 2,647,633
Write-off of equity interest and preexisting relationships in SST IV upon acquisition of control 8,389,573 0 0
Gain on deconsolidation of SST VI OP (169,533) 0 0
Gain on sale of real estate (178,631) 0 (3,944,696)
Impairment of goodwill and intangible assets 0 36,465,732 0
Impairment of investments in Managed REITs 0 4,376,879 0
Gain resulting from acquisition of unconsolidated affiliates 0 0 (8,017,353)
Increase (decrease) in cash from changes in assets and liabilities:      
Other assets, net (1,367,439) (1,170,734) (835,114)
Accounts payable and accrued liabilities 99,039 298,510 1,576,029
Managed REITs receivables (304,468) (428,284) (122,629)
Due to affiliates (537,527) (311,134) (405,505)
Net cash provided by operating activities 58,764,984 26,769,871 9,767,022
Cash flows from investing activities:      
Purchase of real estate (64,585,072) (612,892) (9,435,343)
Additions to real estate (10,288,805) (14,946,580) (12,291,574)
Deposits on acquisition of real estate facilities (340,000) (298,317) (200,000)
Redemption of SSGT II Preferred Units 13,500,000 19,000,000 0
Settlement of foreign currency hedges (3,190,899) 398,951 918,558
Investments in unconsolidated real estate entities, net (5,795,399) 0 0
Deconsolidation of SST VI OP (3,011,368) 0 0
SST VI OP repayment of debt 5,600,000 0 0
Investment in SST VI Mezzanine Loan debt (6,800,000) 0 0
Purchase of other investments (1,967,476)   0
Net proceeds from the sale of real estate 256,237 0 15,721,610
Settlement of company owned life insurance 2,894,561 0 3,122,962
Proceeds from sale of real estate joint venture 0 0 3,358,814
Self Administration Transaction, net of cash acquired 0 0 (3,292,958)
Purchase of foreign currency hedge   0 (147,347)
Net cash used in investing activities (120,214,731) (28,958,838) (347,783,873)
Cash flows from financing activities:      
Gross proceeds from issuance of non-revolver debt 271,675,995 341,717 535,852,363
Proceeds from issuance of revolver debt 246,505,250 0 0
Repayment of revolver debt (15,000,000) 0 0
Repayment of non-revolver debt (422,190,754) 0 (251,732,077)
Scheduled principal payments on non-revolver debt (1,294,637) (701,136) (802,789)
Debt issuance costs (6,970,064) (4,537) (8,531,362)
Debt defeasance costs (525,467) 0 (1,690,703)
Common stock offering costs (971,752) (656,524) (709,842)
Redemption of common stock (4,622,000) (1,708,305) (5,740,677)
Gross proceeds from issuance of equity in SST VI OP 4,015,815 0 0
Offering costs related to issuance of equity in SST VI OP (373,067) 0 0
Distributions paid to preferred stockholders (12,277,935) (8,786,655) 0
Distributions paid to common stockholders (26,157,045) (19,160,171) (18,207,418)
Distributions paid to noncontrolling interests in our Operating Partnership (6,139,772) (5,514,994) (2,440,247)
Gross proceeds from issuance of preferred stock 0 50,000,000 150,000,000
Preferred stock issuance costs 0 (70,057) (3,573,836)
Redemption of noncontrolling interest 0 0 (200,000)
Net cash provided by financing activities 25,674,567 13,739,338 392,223,412
Impact of foreign exchange rate changes on cash and restricted cash (196,135) 536,182 352,354
Change in cash, cash equivalents, and restricted cash (35,971,315) 12,086,553 54,558,915
Cash, cash equivalents, and restricted cash beginning of year 80,657,676 68,571,123 14,012,208
Cash, cash equivalents, and restricted cash end of year 44,686,361 80,657,676 68,571,123
Supplemental disclosures and non-cash transactions:      
Cash paid for interest 27,220,673 32,834,244 35,942,900
Supplemental disclosure of noncash activities:      
Issuance of shares pursuant to distribution reinvestment plan 19,564,929 15,954,081 16,046,534
Distributions payable 8,360,420 6,650,317 5,159,105
Redemption of common stock included in accounts payable and accrued liabilities 1,676,874 732,725 431,326
Deposit applied to the purchase of real estate 156,940 200,000 1,000,000
Real estate and construction in process included in accounts payable and accrued liabilities 19,056 248,845 1,420,217
Foreign currency contracts, interest rate swaps, and interest rate cap contract in accounts payable and accrued liabilities and other assets 4,335,673 4,862,285 3,575,580
Issuance of common stock in connection with the SST IV Merger 231,412,470 0 0
Net liabilities assumed in SSGT Mergers 0 0 1,712,596
Conversion of A-2 Units into A-1 Units 11,219,744 0 0
Debt assumed in the Self Administration Transaction 0 0 19,219,126
Contingent earnout consideration issued in the Self Administration Transaction 0 0 30,900,000
Deferred tax liabilities related to the Self Administration Transaction 0 0 7,415,654
Accounts payable and other accrued liabilities assumed in the Self Administration Transaction 0 0 722,286
Transfer of other assets to debt issuance costs 0 0 1,075,000
SSGT Mergers      
Cash flows from investing activities:      
Mergers, net of cash acquired 0 0 (345,538,595)
Supplemental disclosure of noncash activities:      
Debt assumed 0 0 5,038,435
Issuance of units in our Operating Partnership 0 0 4,217,399
SST IV Merger      
Cash flows from investing activities:      
Mergers, net of cash acquired (46,486,510) 0 0
Supplemental disclosure of noncash activities:      
Debt assumed 81,165,978 0 0
Self Administration Transaction      
Supplemental disclosure of noncash activities:      
Issuance of units in our Operating Partnership 0 0 63,643,000
Limited Partner      
Supplemental disclosure of noncash activities:      
Issuance of units in our Operating Partnership 0 0 18,800,000
Preferred Stock      
Cash flows from investing activities:      
Purchase of SSGT II Preferred Units $ 0 $ (32,500,000) $ 0