Warrant Options	12 Months Ended
Dec. 31, 2021
Warrants And Rights Note Disclosure [Abstract]
Warrant Options	13. WARRANT OPTIONS In October 2018, in connection with the issuance of the Redeemable Series A-1 Preferred Stock, the Company issued a detachable warrant to acquire 534,240 shares of common stock at a price of $0.01 per share at any given time during a period of ten years beginning on the instrument’s issuance date. In April 2020, in connection with the issuance of the Convertible and Redeemable Series A-2 Preferred Stock, the Company issued a detachable warrant to acquire 1,351,960 shares of common stock at a price of $0.01 per share at any time following the occurrence of a qualifying IPO, a sale of the Company, or a redemption in full of the Series A-2 preferred stock (each, an “Adjustment Event”), with an expiration date of ten years from the instrument’s issuance date. The number of shares underlying the warrant and issuable upon exercise was subject to adjustment based upon the price per share of common stock upon the occurrence of an Adjustment Event (Note 18) to reflect an aggregate value of $30.0 million. As a result of the $15.00 per share public offering price in the IPO, the warrant issued in connection with the issuance of the Convertible and Redeemable Series A-2 Preferred Stock was adjusted pursuant to its terms and, upon closing of the IPO, represented a warrant to purchase 1,999,999 shares of common stock (an increase of 648,039 shares). On July 30, 2020, the Redeemable Series A-1 Preferred Stock and the Convertible and Redeemable Series A-2 Preferred Stock warrants were exercised in full resulting in the issuance of an aggregate of 2,534,239 shares of common stock to the holder for an exercise price of $0.01 per share. Fair value loss recorded in other expense on the consolidated statements of operations was $9.3 million and $4.1 million for the year ended December 31, 2020 and 2019, respectively.

Warrant Options

12 Months Ended

Dec. 31, 2021

Warrants And Rights Note Disclosure [Abstract]

13. WARRANT OPTIONS

In October 2018, in connection with the issuance of the Redeemable Series A-1 Preferred Stock, the Company issued a detachable warrant to acquire 534,240 shares of common stock at a price of $0.01 per share at any given time during a period of ten years beginning on the instrument’s issuance date.

In April 2020, in connection with the issuance of the Convertible and Redeemable Series A-2 Preferred Stock, the Company issued a detachable warrant to acquire 1,351,960 shares of common stock at a price of $0.01 per share at any time following the occurrence of a qualifying IPO, a sale of the Company, or a redemption in full of the Series A-2 preferred stock (each, an “Adjustment Event”), with an expiration date of ten years from the instrument’s issuance date. The number of shares underlying the warrant and issuable upon exercise was subject to adjustment based upon the price per share of common stock upon the occurrence of an Adjustment Event (Note 18) to reflect an aggregate value of $30.0 million.

As a result of the $15.00 per share public offering price in the IPO, the warrant issued in connection with the issuance of the Convertible and Redeemable Series A-2 Preferred Stock was adjusted pursuant to its terms and, upon closing of the IPO, represented a warrant to purchase 1,999,999 shares of common stock (an increase of 648,039 shares).

On July 30, 2020, the Redeemable Series A-1 Preferred Stock and the Convertible and Redeemable Series A-2 Preferred Stock warrants were exercised in full resulting in the issuance of an aggregate of 2,534,239 shares of common stock to the holder for an exercise price of $0.01 per share.

Fair value loss recorded in other expense on the consolidated statements of operations was $9.3 million and $4.1 million for the year ended December 31, 2020 and 2019, respectively.