Quarterly Financial Information (Summary Of Quarterly Financial Information) (Details) (USD $) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Information Summary Of Quarterly Financial Information Details
Total Revenues	$ 8,319,017	$ 8,259,686	$ 7,976,227	$ 8,005,181	$ 8,183,276	$ 8,258,966	$ 7,795,098	$ 7,135,474	$ 32,560,111	$ 31,372,814
Income (Loss) Before Taxes	(2,067,539)	(14,345,916)	(384,562)	(1,145,498)	(2,426,214)	330,726	(342,670)	(811,732)
Net Income (Loss)	$ (2,071,985)	$ (17,940,488)	$ (434,814)	$ (1,043,826)	$ (2,380,419)	$ 212,467	$ (276,677)	$ (671,074)	$ (21,491,113)	$ (3,115,703)
Basic
Basic Earnings (Loss) Per Share	$ (0.39)	$ (3.38)	$ (0.08)	$ (0.20)	$ (0.45)	$ 0.04	$ (0.05)	$ (0.13)	$ (4.05)	$ (0.59)
Diluted
Diluted Earnings (Loss) Per Share	$ (0.39)	$ (3.38)	$ (0.08)	$ (0.20)	$ (0.45)	$ 0.04	$ (0.05)	$ (0.13)	$ (4.05)	$ (0.59)