Other Assets, Net - Schedule of Other Assets, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Pension asset	$ 3,868	$ 3,881
Other	1,391	1,381
Total	$ 5,259	$ 5,262