Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income from consolidated operations	$ 11,099	$ 79,647	$ 164,656	$ 280,338
Other comprehensive income (loss):
Foreign currency translation (loss) gain	(1,878)	36	(1,755)	36
Net loss on available-for-sale debt securities, net of tax	(8,468)	(75)	(20,206)	(729)
Comprehensive income from consolidated operations	753	79,608	142,695	279,645
Net loss attributable to noncontrolling interest	438	165	860	165
Foreign currency translation loss (gain) attributable to noncontrolling interest	422	(10)	303	(10)
Comprehensive loss attributable to noncontrolling interest	860	155	1,163	155
Comprehensive income attributable to Fulgent	$ 1,613	$ 79,763	$ 143,858	$ 279,800