Equity Method Investments - Additional Information (Details) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 30, 2017 CNY (¥)	Mar. 31, 2020 USD ($)	Mar. 31, 2020 CNY (¥)	Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Ownership interest to be made in joint venture		30.00%	30.00%	30.00%
FF Gene Biotech
Schedule Of Equity Method Investments [Line Items]
Contribution to be made in joint venture	¥ 60,000,000
Contribution period in joint venture	5 years
Ownership interest to be made in joint venture	30.00%	30.00%	30.00%	30.00%
Contributions remain for joint venture		$ 5.5	¥ 39,300,000
FF Gene Biotech | Equipment
Schedule Of Equity Method Investments [Line Items]
Contributions made to joint venture | $		$ 3.1
Xilong Scientific | FF Gene Biotech
Schedule Of Equity Method Investments [Line Items]
Contribution to be made in joint venture	¥ 102,000,000
Contribution period in joint venture	5 years
Ownership interest to be made in joint venture	51.00%
FJIP | FF Gene Biotech
Schedule Of Equity Method Investments [Line Items]
Contribution to be made in joint venture	¥ 19,000,000
Contribution period in joint venture	10 years
Ownership interest to be made in joint venture	19.00%