Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2019	$ 68,942	$ 127,552,998	$ (753,520)	$ (63,409,431)	$ 63,458,989
Balance at beginning, shares at Dec. 31, 2019	68,941,311
Share-based payment expense		1,400,000			1,400,000
Issuance of common stock pursuant to exercise of stock options - cashless	$ 204	(204)
Issuance of common stock pursuant to exercise of stock options - Cashless, shares	204,028
Issuance of common stock pursuant to exercise of stock options - cash	$ 134	215,213			215,347
Issuance of common stock pursuant to exercise of stock options - Cash, shares	133,921
Foreign currency fluctuations			(114,490)		(114,490)
Net income				546,051	546,051
Ending balance, value at Mar. 31, 2020	$ 69,280	129,168,007	(868,010)	(62,863,380)	65,505,897
Ending balance, shares at Mar. 31, 2020	69,279,260
Share-based payment expense		1,174,999			1,174,999
Issuance of common stock pursuant to exercise of stock options - cashless	$ 106	(106)
Issuance of common stock pursuant to exercise of stock options - Cashless, shares	106,327
Issuance of common stock pursuant to exercise of stock options - cash	$ 177	489,140			489,317
Issuance of common stock pursuant to exercise of stock options - Cash, shares	176,914
Foreign currency fluctuations			(108,681)		(108,681)
Net income				1,558,334	1,558,334
Ending balance, value at Jun. 30, 2020	$ 69,563	130,832,040	(976,691)	(61,305,046)	68,619,866
Ending balance, shares at Jun. 30, 2020	69,562,501
Share-based payment expense		2,143,700			2,143,700
Issuance of common stock – private placement	$ 1,438	21,981,678			21,983,116
Issuance of common stock pursuant to exercise of stock options - cashless	$ 86	(86)
Issuance of common stock pursuant to exercise of stock options - Cashless, shares	86,405
Issuance of common stock pursuant to exercise of stock options - cash	$ 565	1,591,114			1,591,679
Issuance of common stock pursuant to exercise of stock options - Cash, shares	564,741
Issuance of common stock from capital raise, shares	1,437,909
Foreign currency fluctuations			110,027		110,027
Net income				4,753,603	4,753,603
Ending balance, value at Sep. 30, 2020	$ 71,652	156,548,446	(866,664)	(56,551,443)	99,201,991
Ending balance, shares at Sep. 30, 2020	71,651,556
Beginning balance, value at Dec. 31, 2020	$ 72,263	159,884,154	(202,142)	(55,426,832)	104,327,443
Balance at beginning, shares at Dec. 31, 2020	72,262,829
Share-based payment expense		3,575,001			3,575,001
Issuance of common stock pursuant to exercise of stock options - cashless	$ 88	(88)
Issuance of common stock pursuant to exercise of stock options - Cashless, shares	88,312
Issuance of common stock pursuant to exercise of stock options - cash	$ 235	715,675			715,910
Issuance of common stock pursuant to exercise of stock options - Cash, shares	234,546
Foreign currency fluctuations			(192,509)		(192,509)
Net income				585,424	585,424
Ending balance, value at Mar. 31, 2021	$ 72,586	164,174,742	(394,651)	(54,841,408)	109,011,269
Ending balance, shares at Mar. 31, 2021	72,585,687
Share-based payment expense		4,022,259			4,022,259
Issuance of common stock pursuant to exercise of stock options - cashless	$ 316	(316)
Issuance of common stock pursuant to exercise of stock options - Cashless, shares	315,913
Issuance of common stock pursuant to exercise of stock options - cash	$ 435	1,798,672			1,799,107
Issuance of common stock pursuant to exercise of stock options - Cash, shares	434,986
Issuance of common stock from capital raise	$ 1,134	67,768,252			67,769,386
Issuance of common stock from capital raise, shares	1,133,953
Foreign currency fluctuations			276,995		276,995
Net income				3,960,344	3,960,344
Ending balance, value at Jun. 30, 2021	$ 74,471	237,763,609	(117,656)	(50,881,064)	186,839,360
Ending balance, shares at Jun. 30, 2021	74,470,539
Share-based payment expense		5,803,321			5,803,321
Issuance of common stock pursuant to exercise of stock options - cashless	$ 118	(118)
Issuance of common stock pursuant to exercise of stock options - Cashless, shares	117,923
Issuance of common stock pursuant to exercise of stock options - cash	$ 157	726,898			727,056
Issuance of common stock pursuant to exercise of stock options - Cash, shares	157,462
Issuance of common stock from capital raise
Foreign currency fluctuations			1,282,683		1,282,683
Net income				2,745,791	2,745,791
Ending balance, value at Sep. 30, 2021	$ 74,746	$ 244,293,710	$ 1,165,027	$ (48,135,273)	$ 197,398,211
Ending balance, shares at Sep. 30, 2021	74,745,924