Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2017	$ 2,246,367	$ 710,272	$ 1,741,901	$ (264,841)	$ 5,964,082	$ 10,397,781
Share-based compensation expense	249,167					249,167
Proceeds from sale of business				(1,640,939)		(1,640,939)
Net Income					768,377	768,377
Balance at Jun. 30, 2018	2,495,534	710,272	1,741,901	(1,905,780)	6,732,459	9,774,386
Balance at Mar. 31, 2018	2,482,534	710,272	1,741,901	(264,841)	6,337,834	11,007,700
Share-based compensation expense	13,000					13,000
Proceeds from sale of business				(1,640,939)		(1,640,939)
Net Income					394,625	394,625
Balance at Jun. 30, 2018	2,495,534	710,272	1,741,901	(1,905,780)	6,732,459	9,774,386
Balance at Dec. 31, 2018	2,641,300	710,272	1,741,901	(1,905,780)	9,577,792	12,765,485
Share-based compensation expense	266,042					266,042
Proceeds from sale of business					(73,126)	(73,126)
Net Income					3,576,937	3,576,937
Balance at Jun. 30, 2019	2,907,342	710,272	1,741,901	(1,905,780)	13,081,603	16,535,338
Balance at Mar. 31, 2019	2,865,159	710,272	1,741,901	(1,905,780)	11,250,124	14,661,676
Share-based compensation expense	42,183					42,183
Proceeds from sale of business
Net Income					18,831,479	1,831,479
Balance at Jun. 30, 2019	$ 2,907,342	$ 710,272	$ 1,741,901	$ (1,905,780)	$ 13,081,603	$ 16,535,338