Other noncurrent liabilities - Summary of Other Noncurrent Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Other noncurrent liabilities
Reserve for uncertain tax positions	$ 2,714	$ 2,714
OPEB	607	637
Insurance claims and expenses	535	625
Other	349	303
Total	$ 4,205	$ 4,279