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Quarterly Financial Information (Schedule of Quarterly Financial Information (Unaudited)) (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 13,678,372 $ 10,371,918 $ 11,580,600 $ 11,902,747 $ 13,497,906 $ 8,492,530 $ 10,163,724 $ 8,587,605 $ 47,533,637 $ 40,741,765 $ 41,150,131
Operating income (loss) (997,409) (1,847,085) (601,715) (176,796) (2,262,689) (1,806,883) (868,978) (2,452,222) (3,623,005) (7,390,772) (4,081,348)
Net income (loss) attributable to common shareholders $ (960,706) $ (1,953,668) $ (549,507) $ (73,878) $ (2,220,097) $ (1,643,044) $ (720,688) $ (2,379,239) $ (3,537,759) $ (6,963,068) $ (7,978,633)
Earnings per share attributable to common shareholders                      
Basic (in USD per share) $ (0.06) $ (0.13) $ (0.04) $ 0 $ (0.14) $ (0.11) $ (0.05) $ (0.15) $ (0.23) $ (0.45) $ (0.50)
Diluted (in USD per share) $ (0.06) $ (0.13) $ (0.04) $ 0 $ (0.14) $ (0.11) $ (0.05) $ (0.15) $ (0.23) $ (0.45) $ (0.50)