Restructuring Costs - Additional Information (Detail) - USD ($)	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2019
Restructuring Cost And Reserve [Line Items]
Restructuring costs	$ 3,900,000	$ 500,000	$ 400,000	$ 700,000	$ 800,000	$ 900,000	$ 4,800,000	$ 2,400,000
2017 Altra Plan [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring costs							0
2019 Altra Plan [Member]
Restructuring Cost And Reserve [Line Items]
Expected period to incur restructuring expense									2 years
Restructuring costs	3,900,000	$ 500,000	$ 400,000	$ 700,000	$ 800,000	$ 900,000	4,800,000	$ 2,400,000
2019 Altra Plan [Member] | Severance [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring costs	$ 3,900,000						$ 4,800,000
2019 Altra Plan [Member] | Minimum [Member]
Restructuring Cost And Reserve [Line Items]
Expected additional restructuring cost remaining									$ 1,000,000.0
2019 Altra Plan [Member] | Maximum [Member]
Restructuring Cost And Reserve [Line Items]
Expected additional restructuring cost remaining									$ 2,000,000.0