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, 2011	$ 75,785,048	$ 3,855	$ 45,051,608	$ 12,651,687	$ 11,792,214	$ 6,285,684
Issued during year	214,981	16	214,965	0	0	0
Treasury shares acquired and retired	(928,902)	(72)	(928,830)	0	0	0
Net income attributable to common shareholders	9,265,631	0	0	9,265,631	0	0
Unrealized holding income (loss) on securities net of noncontrolling and reclassification adjustment and taxes	(2,127,748)	0	0	0	(2,127,748)	0
Distributions	(3,236,187)	0	0	0	0	(3,236,187)
Gain attributable to noncontrolling interest	681,805	0	0	0	0	681,805
Balance, end of period at Dec. 31, 2012	79,654,628	3,799	44,337,743	21,917,318	9,664,466	3,731,302
Issued during year	33,991	3	33,988	0	0	0
Treasury shares acquired and retired	(320,979)	(26)	(320,953)	0	0	0
Net income attributable to common shareholders	3,252,328	0	0	3,252,328	0	0
Unrealized holding income (loss) on securities net of noncontrolling and reclassification adjustment and taxes	(6,205,065)	0	0	0	(6,205,065)	0
Contributions	931,923	0	0	0	0	931,923
Distributions	(97,069)	0	0	0	0	(97,069)
Gain attributable to noncontrolling interest	617,684	0	0	0	0	617,684
Balance, end of period at Dec. 31, 2013	$ 77,867,441	$ 3,776	$ 44,050,778	$ 25,169,646	$ 3,459,401	$ 5,183,840