CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY (UNAUDITED) - USD ($)	Total	Common Stock	Accumulated other comprehensive loss	Retained Earnings (Accumulated Deficit) [Member]
Balance, shares at Dec. 31, 2019		5,306,720
Balance, amount at Dec. 31, 2019	$ 55,080,325	$ 3,772,669	$ 1,182,866	$ 50,124,790
Shares repurchased, shares		(978)
Shares repurchased, amount	(6,240)	$ (480)	0	(5,760)
Change in comprehensive loss, net of deferred income tax	(299,993)	0	(299,993)	0
Net income (loss)	(1,043,826)	$ 0	0	(1,043,826)
Balance, shares at Mar. 31, 2020		5,305,742
Balance, amount at Mar. 31, 2020	53,730,266	$ 3,772,189	882,873	49,075,204
Balance, shares at Dec. 31, 2019		5,306,720
Balance, amount at Dec. 31, 2019	55,080,325	$ 3,772,669	1,182,866	50,124,790
Change in comprehensive loss, net of deferred income tax	1,402,309
Net income (loss)	(1,478,640)
Balance, shares at Jun. 30, 2020		5,305,742
Balance, amount at Jun. 30, 2020	54,997,754	$ 3,772,189	2,585,175	48,640,390
Balance, shares at Dec. 31, 2019		5,306,720
Balance, amount at Dec. 31, 2019	55,080,325	$ 3,772,669	1,182,866	50,124,790
Net income (loss)	46,498,960
Balance, shares at Dec. 31, 2020		5,304,885
Balance, amount at Dec. 31, 2020	35,032,960	$ 3,771,767	2,637,347	28,623,846
Balance, shares at Mar. 31, 2020		5,305,742
Balance, amount at Mar. 31, 2020	53,730,266	$ 3,772,189	882,873	49,075,204
Change in comprehensive loss, net of deferred income tax	1,702,302	0	1,702,302	0
Net income (loss)	(434,814)	$ 0	0	(434,814)
Balance, shares at Jun. 30, 2020		5,305,742
Balance, amount at Jun. 30, 2020	54,997,754	$ 3,772,189	2,585,175	48,640,390
Balance, shares at Dec. 31, 2020		5,304,885
Balance, amount at Dec. 31, 2020	35,032,960	$ 3,771,767	2,637,347	28,623,846
Change in comprehensive loss, net of deferred income tax	(1,033,155)	0	(1,033,155)	0
Net income (loss)	2,267,703	$ 0	0	2,267,703
Balance, shares at Mar. 31, 2021		5,304,885
Balance, amount at Mar. 31, 2021	36,267,508	$ 3,771,767	1,604,192	30,891,549
Balance, shares at Dec. 31, 2020		5,304,885
Balance, amount at Dec. 31, 2020	35,032,960	$ 3,771,767	2,637,347	28,623,846
Change in comprehensive loss, net of deferred income tax	(942,779)
Net income (loss)	860,893
Balance, shares at Jun. 30, 2021		5,304,863
Balance, amount at Jun. 30, 2021	34,950,972	$ 3,771,757	1,694,568	29,484,647
Balance, shares at Mar. 31, 2021		5,304,885
Balance, amount at Mar. 31, 2021	36,267,508	$ 3,771,767	1,604,192	30,891,549
Shares repurchased, shares		(22)
Shares repurchased, amount	(101)	$ (10)	0	(91)
Change in comprehensive loss, net of deferred income tax	90,376	0	90,376	0
Net income (loss)	(1,406,811)	$ 0	0	(1,406,811)
Balance, shares at Jun. 30, 2021		5,304,863
Balance, amount at Jun. 30, 2021	$ 34,950,972	$ 3,771,757	$ 1,694,568	$ 29,484,647