Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Noncontrolling Interest [Member]	Total
Adoption of Accounting Standards Update No 2016-01 | ASU 2016-01 [Member]	$ 0	$ 0	$ 18,277,328	$ (18,277,328)	$ 0	$ 0
Balance at Dec. 31, 2017	3,333	37,536,164	39,040,456	32,952,338	899,227	110,431,518
Balance at Dec. 31, 2017	3,333	37,536,164	57,317,784	14,675,010	899,227	110,431,518
Common stock issued during year	10	246,747	0	0	0	246,757
Treasury shares acquired	(47)	(1,217,755)	0	0	0	(1,217,802)
Net income attributable to common shareholders	0	0	22,743,537	0	0	22,743,537
Unrealized holding income on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	(12,731,759)	0	(12,731,759)
Contributions	0	0	0	0	0	0
Distributions	0	0	0	0	(247,592)	(247,592)
Gain attributable to noncontrolling interest	0	0	0	0	184,565	184,565
Balance at Sep. 30, 2018	3,296	36,565,156	80,061,321	1,943,251	836,200	119,409,224
Balance at Jun. 30, 2018	3,305	36,829,530	68,123,778	9,665,033	804,122	115,425,768
Common stock issued during year	0	0	0	0	0	0
Treasury shares acquired	(9)	(264,374)	0	0	0	(264,383)
Net income attributable to common shareholders	0	0	11,937,543	0	0	11,937,543
Unrealized holding income on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	(7,721,782)	0	(7,721,782)
Contributions	0	0	0	0	0	0
Distributions	0	0	0	0	0	0
Gain attributable to noncontrolling interest	0	0	0	0	32,078	32,078
Balance at Sep. 30, 2018	3,296	36,565,156	80,061,321	1,943,251	836,200	119,409,224
Balance at Dec. 31, 2018	3,296	36,567,865	69,708,901	62,495	734,153	107,076,710	[1]
Common stock issued during year	7	246,527	0	0	0	246,534
Treasury shares acquired	(26)	(849,239)	0	0	0	(849,265)
Net income attributable to common shareholders	0	0	13,240,293	0	0	13,240,293
Unrealized holding income on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	9,535,501	0	9,535,501
Contributions	0	0	0	0	0	0
Distributions	0	0	0	0	(535,662)	(535,662)
Gain attributable to noncontrolling interest	0	0	0	0	294,308	294,308
Balance at Sep. 30, 2019	3,277	35,965,153	82,949,194	9,597,996	492,799	129,008,419
Balance at Jun. 30, 2019	3,286	36,253,067	84,065,838	7,057,702	749,916	128,129,809
Common stock issued during year	0	0	0	0	0	0
Treasury shares acquired	(9)	(287,914)	0	0	0	(287,923)
Net income attributable to common shareholders	0	0	(1,116,644)	0	0	(1,116,644)
Unrealized holding income on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	2,540,294	0	2,540,294
Contributions	0	0	0	0	0	0
Distributions	0	0	0	0	(289,912)	(289,912)
Gain attributable to noncontrolling interest	0	0	0	0	32,795	32,795
Balance at Sep. 30, 2019	$ 3,277	$ 35,965,153	$ 82,949,194	$ 9,597,996	$ 492,799	$ 129,008,419

[1] Balance sheet audited at December 31, 2018.