CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]		Additional paid in capital [Member]	Accumulated other comprehensive loss [Member]	Retained earnings [Member]	Total	Non-controlling interests [Member]	Stockholders Equity
Balance at Dec. 31, 2018	$ 5		$ 371,794	$ (524)	$ 191,133	$ 562,408	$ 8,318	$ 570,726
Balance (in shares) at Dec. 31, 2018	46,052,802
Issuance of Common Stock upon exercise of employee and nonemployees stock-based awards		[1]	309			309		309
Issuance of Common Stock upon exercise of employee and non-employee stock options, shares	254,515
Equity based compensation expenses to employees and nonemployee			9,704			9,704		9,704
Issuance of Common stock upon business combination		[1]	34,601			34,601		34,601
Issuance of Common stock upon business combination, shares	1,194,046
Non-controlling interests related to business combination							67,734	67,734
Change in non-controlling interests			977			977	(2,964)	(1,987)
Other comprehensive income (loss) adjustments				(696)		(696)	(849)	(1,545)
Net income					19,016	19,016	(1,041)	17,975
Balance at Mar. 31, 2019	$ 5		417,385	(1,220)	210,149	626,319	71,198	697,517
Balance (in shares) at Mar. 31, 2019	47,501,363
Balance at Dec. 31, 2018	$ 5		371,794	(524)	191,133	562,408	8,318	570,726
Balance (in shares) at Dec. 31, 2018	46,052,802
Change in non-controlling interests						67,089
Net income						93,771
Balance at Sep. 30, 2019	$ 5		450,459	(3,356)	284,904	732,012	5,176	737,188
Balance (in shares) at Sep. 30, 2019	48,576,288
Balance at Mar. 31, 2019	$ 5		417,385	(1,220)	210,149	626,319	71,198	697,517
Balance (in shares) at Mar. 31, 2019	47,501,363
Issuance of Common Stock upon exercise of employee and nonemployees stock-based awards			3,455			3,455		3,455
Issuance of Common Stock upon exercise of employee and non-employee stock options, shares	466,062
Equity based compensation expenses to employees and nonemployee			11,372			11,372		11,372
Change in non-controlling interests			(528)			(528)	(65,551)	(66,079)
Other comprehensive income (loss) adjustments				325		325	545	870
Net income					33,128	33,128	(215)	32,913
Balance at Jun. 30, 2019	$ 5		431,684	(895)	243,277	674,071	5,977	680,048
Balance (in shares) at Jun. 30, 2019	47,967,425
Issuance of Common Stock upon exercise of employee and nonemployees stock-based awards		[1]	1,176			1,176		1,176
Issuance of Common Stock upon exercise of employee and non-employee stock options, shares	608,863
Equity based compensation expenses to employees and nonemployee			17,609			17,609		17,609
Change in non-controlling interests			(10)			(10)	(612)	(622)
Other comprehensive income (loss) adjustments				(2,461)		(2,461)	(286)	(2,747)
Net income					41,627	41,627	97	41,724
Balance at Sep. 30, 2019	$ 5		450,459	(3,356)	284,904	732,012	5,176	737,188
Balance (in shares) at Sep. 30, 2019	48,576,288
Balance at Dec. 31, 2019	$ 5		475,792	(1,809)	337,682	811,670		811,670
Balance (in shares) at Dec. 31, 2019	48,898,062
Issuance of Common Stock upon exercise of employee and nonemployees stock-based awards		[1]	3,308			3,308		3,308
Issuance of Common Stock upon exercise of employee and non-employee stock options, shares	701,431
Equity based compensation expenses to employees and nonemployee			12,773			12,773		12,773
Other comprehensive income (loss) adjustments				(3,581)		(3,581)		(3,581)
Net income					42,248	42,248		42,248
Balance at Mar. 31, 2020	$ 5		491,873	(5,390)	379,930	866,418		866,418
Balance (in shares) at Mar. 31, 2020	49,599,493
Balance at Dec. 31, 2019	$ 5		475,792	(1,809)	337,682	811,670		811,670
Balance (in shares) at Dec. 31, 2019	48,898,062
Change in non-controlling interests
Net income						122,667
Balance at Sep. 30, 2020	$ 5		574,326	(2,643)	460,349	1,032,037		1,032,037
Balance (in shares) at Sep. 30, 2020	51,207,310
Balance at Mar. 31, 2020	$ 5		491,873	(5,390)	379,930	866,418		866,418
Balance (in shares) at Mar. 31, 2020	49,599,493
Issuance of Common Stock upon exercise of employee and nonemployees stock-based awards		[1]	5,806			5,806		5,806
Issuance of Common Stock upon exercise of employee and non-employee stock options, shares	476,258
Equity based compensation expenses to employees and nonemployee			13,961			13,961		13,961
Other comprehensive income (loss) adjustments				1,948		1,948		1,948
Net income					36,668	36,668		36,668
Balance at Jun. 30, 2020	$ 5		511,640	(3,442)	416,598	924,801		924,801
Balance (in shares) at Jun. 30, 2020	50,075,751
Issuance of Common Stock upon exercise of employee and nonemployees stock-based awards		[1]	10,091			10,091		10,091
Issuance of Common Stock upon exercise of employee and non-employee stock options, shares	1,131,559
Equity based compensation expenses to employees and nonemployee			16,259			16,259		16,259
Equity component of convertible senior notes, net			36,336			36,336		36,336
Other comprehensive income (loss) adjustments				799		799		799
Net income					43,751	43,751		43,751
Balance at Sep. 30, 2020	$ 5		$ 574,326	$ (2,643)	$ 460,349	$ 1,032,037		$ 1,032,037
Balance (in shares) at Sep. 30, 2020	51,207,310

[1] Represents an amount less than $1