Consolidated Statements of Shareholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	Total
Balance, beginning of year at Dec. 31, 2014	$ 3,706	$ 43,122,944	$ 32,145,662	$ 6,853,974	$ 1,446,314	$ 83,572,600
Common stock issued during year	19	254,908	0	0	0	254,927
Treasury shares acquired and retired	(26)	(375,182)	0	0	0	(375,208)
Net income attributable to common shareholders	0	0	916,620	0	0	916,620
Unrealized holding gain on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	(8,037,526)	0	(8,037,526)
Contributions	0	0	0	0	1,124,217	1,124,217
Distributions	0	0	0	0	(757,547)	(757,547)
Gain attributable to noncontrolling interest	0	0	0	0	289,419	289,419
Balance, end of period at Dec. 31, 2015	3,699	43,002,670	33,062,282	(1,183,552)	2,102,403	76,987,502
Common stock issued during year	21	307,866	0	0	0	307,887
Treasury shares acquired and retired	(370)	(5,431,824)	0	0	0	(5,432,194)
Net income attributable to common shareholders	0	0	1,168,025	0	0	1,168,025
Unrealized holding gain on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	21,537,244	0	21,537,244
Contributions	0	0	0	0	83,696	83,696
Distributions	0	0	0	0	(638,578)	(638,578)
Gain attributable to noncontrolling interest	0	0	0	0	288,260	288,260
Balance, end of period at Dec. 31, 2016	$ 3,350	$ 37,878,712	$ 34,230,307	$ 20,353,692	$ 1,835,781	$ 94,301,842