Business Combinations - Summary of Consideration Paid and Amount of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands				12 Months Ended
	Nov. 07, 2022	Apr. 26, 2022	Apr. 16, 2022	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Cash, net of cash received				$ 172,679	$ 61,868
Restricted cash				5,000
Goodwill				$ 143,027	$ 50,897
Inform Diagnostics
Business Acquisition [Line Items]
Cash, net of cash received		$ 137,755
Total Considerations			$ 170,000
Net working capital		(15,024)
Fixed assets		20,242
ROU assets - operating		12,653
ROU assets - finance		1,183
Deferred tax assets		3,410
Other long-term assets		4,711
Identifiable intangible assets		57,060
Operating lease liabilities		(12,653)
Finance lease liabilities		(1,183)
Income tax payable		(40)
Other long-term liabilities		(4,449)
Recognized amounts of identifiable assets acquired and liabilities assumed, net		65,910
Goodwill		71,845
Total		$ 137,755
Fulgent Pharma Holdings, Inc
Business Acquisition [Line Items]
Cash, net of cash received	$ 39,924
Stock	28,111
Total Considerations	68,035
Debt-free net working capital	(3,679)
Restricted cash	5,000
Fixed assets	1,310
Identifiable intangible assets	64,590
Deferred tax liabilities	(16,172)
Long-term or non-operating liabilities	(5,069)
Recognized amounts of identifiable assets acquired and liabilities assumed, net	45,980
Goodwill	22,055
Total	$ 68,035