Segment Information - Geographic Information on Property (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Long-Lived Assets by Geographical Areas [Line Items]
Net property	$ 189,620	$ 167,038
Property, plant, equipment, and operating leases, net	243,071	218,713	$ 157,940
United States
Long-Lived Assets by Geographical Areas [Line Items]
Net property	134,234	113,528	92,511
Other
Long-Lived Assets by Geographical Areas [Line Items]
Net property	$ 108,837	$ 105,185	$ 65,429