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	(38)	(953,381)	0	0	0	(953,419)
Net income attributable to common shareholders	0	0	10,805,994	0	0	10,805,994
Unrealized holding income on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	(5,009,977)	0	(5,009,977)
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	152,487	152,487
Balance at Jun. 30, 2018	3,305	36,829,530	68,123,778	9,665,033	804,122	115,425,768
Balance at Mar. 31, 2018	3,318	37,165,939	59,975,029	11,289,621	928,581	109,362,488
Common stock issued during year	1	16,756	0	0	0	16,757
Treasury shares acquired	(14)	(353,165)	0	0	0	(353,179)
Net income attributable to common shareholders	0	0	8,148,749	0	0	8,148,749
Unrealized holding income on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	(1,624,588)	0	(1,624,588)
Contributions	0	0	0	0	0	0
Distributions	0	0	0	0	(247,446)	(247,446)
Gain attributable to noncontrolling interest	0	0	0	0	122,987	122,987
Balance at Jun. 30, 2018	3,305	36,829,530	68,123,778	9,665,033	804,122	115,425,768
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	(17)	(561,325)	0	0	0	(561,342)
Net income attributable to common shareholders	0	0	14,356,937	0	0	14,356,937
Unrealized holding income on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	6,995,207	0	6,995,207
Contributions	0	0	0	0	0	0
Distributions	0	0	0	0	(245,750)	(245,750)
Gain attributable to noncontrolling interest	0	0	0	0	261,513	261,513
Balance at Jun. 30, 2019	3,286	36,253,067	84,065,838	7,057,702	749,916	128,129,809
Balance at Mar. 31, 2019	3,297	36,585,277	81,353,780	3,949,134	642,136	122,533,624
Common stock issued during year	1	16,735	0	0	0	16,736
Treasury shares acquired	(12)	(348,945)	0	0	0	(348,957)
Net income attributable to common shareholders	0	0	2,712,058	0	0	2,712,058
Unrealized holding income on securities net of noncontrolling interest and reclassification adjustment and taxes	0	0	0	3,108,568	0	3,108,568
Contributions	0	0	0	0	0	0
Distributions	0	0	0	0	0	0
Gain attributable to noncontrolling interest	0	0	0	0	107,780	107,780
Balance at Jun. 30, 2019	$ 3,286	$ 36,253,067	$ 84,065,838	$ 7,057,702	$ 749,916	$ 128,129,809

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