Leases - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Jul. 31, 2015	Sep. 30, 2021
Lessee Operating Lease [Line Items]
Remaining rent payments		$ 2,161
Beaverton, Oregon [Member]
Lessee Operating Lease [Line Items]
Existence of option to extend		0
Option to extend operating lease		0
Option to extend operating lease, month and year	2024-03
Remaining rent payments		$ 2,104