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, 2010	$ 65,127,757	$ 3,848	$ 41,432,636	$ 6,335,072	$ 3,679,684	$ 13,676,517
Issued during year	4,094,526	50	4,094,476	0	0	0
Treasury shares acquired and retired	(475,547)	(43)	(475,504)	0	0	0
Net income attributable to common shareholders	6,316,615	0	0	6,316,615	0	0
Unrealized holding income (loss) on securities net of noncontrolling and reclassification adjustment and taxes	8,112,530	0	0	0	8,112,530	0
Distributions	(3,131,271)	0	0	0	0	(3,131,271)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(6,895,546)	0	0	0	0
Noncontrolling Interest, Increase from Business Combination	1,777,900	0	0	0	0
Gain attributable to noncontrolling interest	858,084	0	0	0	0	858,084
Balance, end of period 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