Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	$ (434)	$ 5	$ (396)	$ 17
Statutory rate				21.00%
Net deferred tax assets	14,600		$ 14,600		$ 15,300
Operating loss and credit carry forward, expiration period			The Company’s federal NOLs generated in 2018 and later periods will not expire, but the Company’s NOLs generated through December 31, 2017 have a finite life primarily based on the 20-year carry forward of federal net operating losses. The timing differences have a ratable reversal pattern over 12 years
Net operating loss carry forward period			20 years
Domestic deferred tax assets ratable reversal pattern period			12 years
Gross unrecognized tax benefit	800		$ 800		$ 800
Deferred payroll taxes	200		200
Sweden [Member]
Income Tax Disclosure [Line Items]
Income tax expense (benefit)			400
Domestic Tax Authority [Member]
Income Tax Disclosure [Line Items]
Net deferred tax assets	11,900		11,900
Foreign Tax Authority | CHINA [Member]
Income Tax Disclosure [Line Items]
Net deferred tax assets	1,100		1,100
Foreign Tax Authority | Sweden [Member]
Income Tax Disclosure [Line Items]
Net deferred tax assets	$ 1,600		$ 1,600