Other Liabilities - Summary of Other Long-term Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Pension and other post retirement liabilities	$ 9,782	$ 9,111
Deferred tax liabilities	5,725	5,339
Other liabilities	10,855	11,306
Total	$ 26,362	$ 25,756