Quarterly Financial Information (Summary Of Quarterly Financial Information) (Details) (USD $) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Summary Of Quarterly Financial Information Details Usd
Total Revenues	$ 8,667,246	$ 8,451,503	$ 8,313,691	$ 7,832,199	$ 7,643,578	$ 7,764,783	$ 7,621,768	$ 7,440,111	$ 33,264,639	$ 30,470,240	$ 31,130,892
Income (Loss) Before Taxes	(358,954)	(967,640)	182,673	(591,037)	(70,276)	58,123	402,321	906,337	(1,734,958)	1,296,505	1,240,775
Net Income (Loss)	$ (248,956)	$ (649,510)	$ 112,381	$ (396,785)	$ (48,202)	$ 32,774	$ 270,006	$ 591,783	$ (1,182,870)	$ 846,361	$ 603,668
Basic
Basic Earnings (Loss) Per Share	$ (.05)	$ (.12)	$ .02	$ (.07)	$ (0.01)	$ 0.01	$ 0.05	$ 0.11	$ (.22)	$ 0.16	$ .11
Diluted
Diluted Earnings (Loss) Per Share	$ (0.05)	$ (0.12)	$ 0.02	$ (0.07)	$ (0.01)	$ 0.01	$ 0.05	$ 0.11	$ (.22)	$ 0.16	$ .11