The Company and Significant Accounting Policies - Summary of Components of AOCI (Detail) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, Beginning			$ (977)		$ (977)
Other comprehensive income (loss)	$ 244	$ (1,721)	(380)
Income tax (expense) benefit	(68)
Amounts reclassified from AOCI	473
Income tax (expense) benefit	(121)	428	97
Total other comprehensive income (loss)	528	(1,293)	(283)	$ 225	(1,048)	$ 253
Balance, Ending	(2,025)				(2,025)
Foreign Currency Translation
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, Beginning	(1,343)	(1,300)	(1,300)		(1,300)
Other comprehensive income (loss)	(23)	(43)
Total other comprehensive income (loss)	(23)	(43)
Balance, Ending	(1,366)	(1,343)	(1,300)		(1,366)
Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, Beginning	(1,210)	40	323		323
Other comprehensive income (loss)	267	(1,678)	(380)
Income tax (expense) benefit	(68)
Amounts reclassified from AOCI	473
Income tax (expense) benefit	(121)	428	97
Total other comprehensive income (loss)	551	(1,250)	(283)
Balance, Ending	(659)	(1,210)	40		(659)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, Beginning	(2,553)	(1,260)	(977)		(977)
Balance, Ending	$ (2,025)	$ (2,553)	$ (1,260)		$ (2,025)