For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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Direct costs arising from transactions with related parties who are not affiliates or joint Ventures. These costs are categorized as cost of goods sold.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Related Parties - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Apr. 30, 2017
Xilong Scientific \| Minimum
Related Party Transaction [Line Items]
Ownership percentage of common stock outstanding shares	10.00%
AHMC Healthcare Inc. \| Genetic Sequencing Services
Related Party Transaction [Line Items]
Revenue from related parties	$ 1,100,000
Trade accounts receivable, net from related parties	$ 1,800,000		$ 1,800,000
Beneficial Ownership \| XiLong USA
Related Party Transaction [Line Items]
Ownership percentage of common stock outstanding shares	4.92%
FF Gene Biotech \| FJIP
Related Party Transaction [Line Items]
Ownership percentage				19.00%
FF Gene Biotech \| Dr. Han Lin Gao \| FJIP
Related Party Transaction [Line Items]
Ownership percentage	25.00%
Fulgent Pharma LLC
Related Party Transaction [Line Items]
Related party costs	$ 0	$ 0
Due to related parties	494,000		$ 409,000
Fulgent Pharma LLC \| Research Development Service
Related Party Transaction [Line Items]
Expenses to transport employees and supplies	$ 108,000