Condensed Interim Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Earnings (Deficiency) [Member]	Other Comprehensive Income (Loss) [Member]	Total	Non-Controlling Interest [Member]	Total Stockholders' Equity [Member]
Beginning balance at Dec. 31, 2017	$ 11,598	$ 15,114,835	$ 451,621	$ (656,093)	$ 14,921,961		$ 14,921,961
Beginning balance, Shares at Dec. 31, 2017	11,597,991
Translation adjustment				(119,029)	(119,029)		(119,029)
Net income (loss)			703,664		703,664		703,664
Common stock issued	$ 33	36,327			36,360		36,360
Common stock issued, Shares	33,000
Stock-based compensation		25,700			25,700		25,700
Ending balance at Mar. 31, 2018	$ 11,631	15,176,862	1,155,285	(775,122)	15,568,656		15,568,656
Ending balance, Shares at Mar. 31, 2018	11,630,991
Beginning balance at Dec. 31, 2017	$ 11,598	15,114,835	451,621	(656,093)	14,921,961		14,921,961
Beginning balance, Shares at Dec. 31, 2017	11,597,991
Net income (loss)					2,839,570
Ending balance at Jun. 30, 2018	$ 11,631	15,202,169	3,291,191	(961,775)	17,543,216		17,543,216
Ending balance, Shares at Jun. 30, 2018	11,630,991
Beginning balance at Dec. 31, 2017	$ 11,598	15,114,835	451,621	(656,093)	14,921,961		14,921,961
Beginning balance, Shares at Dec. 31, 2017	11,597,991
Ending balance at Dec. 31, 2018	$ 11,700	15,328,285	2,941,889	(1,222,573)	17,059,301	2,462,231	19,521,532
Ending balance, Shares at Dec. 31, 2018	11,699,657
Beginning balance at Mar. 31, 2018	$ 11,631	15,176,862	1,155,285	(775,122)	15,568,656		15,568,656
Beginning balance, Shares at Mar. 31, 2018	11,630,991
Translation adjustment				(186,653)	(186,653)		(186,653)
Net income (loss)			2,135,906		2,135,906		2,135,906
Stock-based compensation		25,307			25,307		25,307
Ending balance at Jun. 30, 2018	$ 11,631	15,202,169	3,291,191	(961,775)	17,543,216		17,543,216
Ending balance, Shares at Jun. 30, 2018	11,630,991
Beginning balance at Dec. 31, 2018	$ 11,700	15,328,285	2,941,889	(1,222,573)	17,059,301	2,462,231	19,521,532
Beginning balance, Shares at Dec. 31, 2018	11,699,657
Translation adjustment				182,293	182,293		182,293
Net income (loss)			1,011,150		1,011,150	29,264	1,040,414
Common stock issued	$ 12	10,838			10,850		10,850
Common stock issued, Shares	12,000
Stock-based compensation		5,747			5,747		5,747
Dividends paid			(590,483)		(590,483)		(590,483)
Ending balance at Mar. 31, 2019	$ 11,712	15,344,870	3,362,556	(1,040,280)	17,678,858	2,491,495	20,170,353
Ending balance, Shares at Mar. 31, 2019	11,711,657
Beginning balance at Dec. 31, 2018	$ 11,700	15,328,285	2,941,889	(1,222,573)	17,059,301	2,462,231	19,521,532
Beginning balance, Shares at Dec. 31, 2018	11,699,657
Net income (loss)					983,417
Ending balance at Jun. 30, 2019	$ 12,018	16,035,222	2,448,949	(1,096,474)	17,399,715	2,683,565	20,083,280
Ending balance, Shares at Jun. 30, 2019	12,017,545
Beginning balance at Mar. 31, 2019	$ 11,712	15,344,870	3,362,556	(1,040,280)	17,678,858	2,491,495	20,170,353
Beginning balance, Shares at Mar. 31, 2019	11,711,657
Translation adjustment				(56,194)	(56,194)		(56,194)
Net income (loss)			(27,733)		(27,733)	208,531	180,798
Common stock issued	$ 306	628,714			629,020		629,020
Common stock issued, Shares	305,888
Distributions to noncontrolling interests						(16,461)	(16,461)
Stock-based compensation		61,638			61,638		61,638
Dividends paid			(885,874)		(885,874)		(885,874)
Ending balance at Jun. 30, 2019	$ 12,018	$ 16,035,222	$ 2,448,949	$ (1,096,474)	$ 17,399,715	$ 2,683,565	$ 20,083,280
Ending balance, Shares at Jun. 30, 2019	12,017,545