Statement of Shareholders' Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Balance, beginning of year at Dec. 31, 2013	$ 77,867,441	$ 3,776	$ 44,050,778	$ 25,169,646	$ 3,459,401	$ 5,183,840
Issued during year	68,947	4	68,943	0	0	0
Treasury shares acquired and retired	(996,851)	(74)	(996,777)	0	0	0
Net income attributable to common shareholders	6,976,016	0	0	6,976,016	0	0
Other comprehensive income (loss)
Unrealized holding income (loss) on securities net of noncontrolling and reclassification adjustment and taxes	3,394,573	0	0	0	3,394,573	0
Contributions	185,689	0	0	0	0	185,689
Distributions	(6,990,941)	0	0	0	0	(6,990,941)
Gain attributable to noncontrolling interest	3,067,726	0	0	0	0	3,067,726
Balance, end of period at Dec. 31, 2014	83,572,600	3,706	43,122,944	32,145,662	6,853,974	1,446,314
Issued during year	254,927	19	254,908	0	0	0
Treasury shares acquired and retired	(375,208)	(26)	(375,182)	0	0	0
Net income attributable to common shareholders	916,620	0	0	916,620	0	0
Other comprehensive income (loss)
Unrealized holding income (loss) on securities net of noncontrolling and reclassification adjustment and taxes	(8,037,526)	0	0	0	(8,037,526)	0
Contributions	1,124,217	0	0	0	0	1,124,217
Distributions	(757,547)	0	0	0	0	(757,547)
Gain attributable to noncontrolling interest	289,419	0	0	0	0	289,419
Balance, end of period at Dec. 31, 2015	$ 76,987,502	$ 3,699	$ 43,002,670	$ 33,062,282	$ (1,183,552)	$ 2,102,403