Interim Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interim Condensed Consolidated Statements of Income [Abstract]
Net revenues	$ 473,770	$ 320,976
Cost of net revenues	(236,766)	(158,218)
Gross profit	237,004	162,758
Operating expenses:
Product and technology development	(52,369)	(38,396)
Sales and marketing	(130,676)	(110,723)
General and administrative	(43,820)	(43,058)
Total operating expenses	(226,865)	(192,177)
Income (loss) from operations	10,139	(29,419)
Other income (expenses):
Interest income and other financial gains	24,444	9,195
Interest expense and other financial losses	(15,559)	(10,734)
Foreign currency (losses) gains	(3,669)	5,601
Net income (loss) before income tax expense (gain)	15,355	(25,357)
Income tax (expense) gain	(3,491)	12,438
Net income (loss)	$ 11,864	$ (12,919)
Basic EPS: Basic net income (loss)
Available to shareholders per common share	$ 0.13	$ (0.29)
Weighted average of outstanding common shares	45,980,255	44,157,364
Diluted EPS: Diluted net income (loss)
Available to shareholders per common share	$ 0.13	$ (0.29)
Weighted average of outstanding common shares	45,980,255	44,157,364