Restructuring Costs - Reconciliation of Accrued Restructuring Costs (Detail) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 600,000	$ 500,000	$ 1,700,000	$ 2,300,000	$ 500,000	$ 2,300,000
Restructuring expense incurred	500,000	400,000	800,000	900,000	900,000	1,700,000
Cash payments	(500,000)	(300,000)	(1,400,000)	(1,500,000)
Ending Balance	600,000	600,000	1,100,000	1,700,000	600,000	1,100,000
2017 Altra Plan [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance			400,000	500,000		500,000
Restructuring expense incurred					0
Cash payments			(100,000)	(100,000)
Ending Balance			300,000	400,000		300,000
2019 Altra Plan [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	600,000	500,000	1,300,000	1,800,000	500,000	1,800,000
Restructuring expense incurred	500,000	400,000	800,000	900,000	900,000	1,700,000
Cash payments	(500,000)	(300,000)	(1,300,000)	(1,400,000)
Ending Balance	$ 600,000	$ 600,000	$ 800,000	$ 1,300,000	$ 600,000	$ 800,000