Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Number of operating segment \| segment	1
Restricted cash	$ 7,598,000	$ 8,474,000
Allowance for doubtful accounts	0	0
Impairment of long lived assets	0	0	$ 0
Advertising costs	4,700,000	1,900,000	1,500,000
Foreign currency transaction gains (losses)	(900,000)	1,300,000	$ 100,000
Restricted cash	$ 1,028,000	16,567,000
Accounts Receivable \| Customer Concentration Risk \| One Distributor
Concentration risk	11.00%
Restricted Cash For Letter Of Credit
Restricted cash	$ 7,600,000
Fair value, inputs, level 1 \| Money Market Funds
Fair value of money market instruments	548,000,000	600,900,000
Unrealized gains (losses) on money market instruments	$ 0	$ 0

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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