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Quarterly Financial Information (Schedule of Quarterly Financial Information (Unaudited)) (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 8,319,861 $ 8,072,540 $ 9,055,483 $ 10,537,159 $ 10,261,534 $ 9,250,689 $ 9,598,177 $ 8,330,734 $ 35,985,043 $ 37,441,134 $ 34,388,295
Operating income (loss) (4,353,996) (1,563,395) (1,435,729) (324,300) (1,745,946) (1,208,686) (1,580,962) (1,846,001) (7,677,420) (6,381,595) (9,288,182)
Net income (loss) attributable to common shareholders $ (3,847,697) $ (1,055,278) $ 1,228,560 $ 166,828 $ (883,776) $ (481,737) $ (918,275) $ (1,055,620) $ (3,507,587) $ (3,339,408) $ (3,537,759)
Earnings per share attributable to common shareholders                      
Basic (in USD per share) $ (0.26) $ (0.07) $ 0.08 $ 0.01 $ (0.06) $ (0.03) $ (0.06) $ (0.07) $ (0.24) $ (0.22) $ (0.23)
Diluted (in USD per share) $ (0.26) $ (0.07) $ 0.08 $ 0.01 $ (0.06) $ (0.03) $ (0.06) $ (0.07) $ (0.24) $ (0.22) $ (0.23)