Revenue Recognition - Schedule of Disaggregation of Revenue by Revenue Source (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues fom sales to unaffiliated customers:
Revenues	$ 30,983	$ 17,877	$ 58,140	$ 28,997
Consumer
Revenues fom sales to unaffiliated customers:
Revenues	21,091	15,526	39,655	25,285
Commercial
Revenues fom sales to unaffiliated customers:
Revenues	$ 9,892	$ 2,351	$ 18,485	$ 3,712