CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($)	Redeemable preferred stock [Member]	Common stock [Member]	Additional paid-in capital [Member]	Retained earnings [Member]	Cumulative translation adjustment [Member]	Non controlling interests [Member]	Total
Balance at Dec. 31, 2018	$ 20,878	$ 8,989,744	$ 87,211,953	$ 59,298,161	$ (549,555)	$ 8,784,722	$ 163,755,903
Balance (in shares) at Dec. 31, 2018	34,796	14,982,906
Issue of share capital	$ 0	$ 16,118	(16,118)	0	0	0	0
Issue of share capital (in shares)	0	26,864
Buyback of preferred stock	$ (1,190)	$ 0	(16,605)	0	0	0	(17,795)
Buyback of preferred stock (in shares)	(1,983)	0
Net income (loss)	$ 0	$ 0	0	6,186,431	0	273,908	6,460,339
Dividends declared	0	0	0	(1,280,223)	0	0	(1,280,223)
Stock-based compensation	0	0	156,062	0	0	0	156,062
Balance at Mar. 31, 2019	$ 19,688	$ 9,005,862	87,335,292	64,204,369	(549,555)	9,058,630	169,074,286
Balance (in shares) at Mar. 31, 2019	32,813	15,009,770
Issue of share capital	$ 4,376	$ 6,344	(10,720)	0	0	0	0
Issue of share capital (in shares)	7,293	10,574
Buyback of preferred stock	$ (415)	$ 0	(5,886)	0	0	0	(6,301)
Buyback of preferred stock (in shares)	(691)	0
Net income (loss)	$ 0	$ 0	0	2,476,262	0	464,896	2,941,158
Exercise of options	$ 423	$ 0	6,700	0	0	0	7,123
Exercise of options (in shares)	705	0
Dividends declared	$ 0	$ 0	0	(1,280,359)	0	0	(1,280,359)
Sale of CW-Bali	0	0	0	0	549,555	241,282	790,837
Stock-based compensation	0	0	209,049	0	0	0	209,049
Balance at Jun. 30, 2019	$ 24,072	$ 9,012,206	87,534,435	65,400,272	$ 0	9,764,808	171,735,793
Balance (in shares) at Jun. 30, 2019	40,120	15,020,344
Balance at Dec. 31, 2019	$ 20,251	$ 9,029,765	88,356,509	66,352,733		14,193,616	177,952,874
Balance (in shares) at Dec. 31, 2019	33,751	15,049,608
Issue of share capital	$ 0	$ 38,939	(38,939)	0		0	0
Issue of share capital (in shares)	0	64,898
Net income (loss)	$ 0	$ 0	0	2,888,607		360,998	3,249,605
Purchase of noncontrolling interest in subsidiary	0	0	(2,444,047)	0		(6,055,953)	(8,500,000)
Dividends declared	0	0	0	(1,289,378)		0	(1,289,378)
Stock-based compensation	0	0	161,406	0		0	161,406
Balance at Mar. 31, 2020	$ 20,251	$ 9,068,704	86,034,929	67,951,962		8,498,661	171,574,507
Balance (in shares) at Mar. 31, 2020	33,751	15,114,506
Issue of share capital	$ 3,674	$ 0	(3,674)	0		0	0
Issue of share capital (in shares)	6,123	0
Net income (loss)	$ 0	$ 0	0	(1,127,842)		180,154	(947,688)
Exercise of options	$ 217	0	4,201	0		0	4,418
Exercise of options (in shares)	363
Dividends declared	$ 0	0	0	(1,287,474)		0	(1,287,474)
Stock-based compensation	0	0	199,065	0		0	199,065
Balance at Jun. 30, 2020	$ 24,142	$ 9,068,704	$ 86,234,521	$ 65,536,646		$ 8,678,815	$ 169,542,828
Balance (in shares) at Jun. 30, 2020	40,237	15,114,506