Business Segment Information - Goodwill (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Goodwill	$ 209,825	$ 183,197	$ 161,183
Engineered Systems Segment [Member]
Segment Reporting Information [Line Items]
Goodwill	141,174	114,746
Industrial Process Solutions Segment [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 68,651	$ 68,451

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.