Segments - Results by Business Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net sales	$ 1,656.2	$ 1,659.7	$ 1,492.9
Cost of sales	1,374.8	1,388.3	1,282.4
Selling, general and administrative expenses	187.4	181.5	162.2
Restructuring and other special charges	4.9	6.6	17.3
Segment operating income (loss)	89.1	83.3	31.0
Gains on sales of assets, net	(2.5)	(0.8)	(2.4)
Other expense	5.0	0.0	0.0
Operating income	86.6	84.1	33.4
Other components of pension and other postretirement benefits income, net	5.2	2.5	11.1
Interest expense, net	(47.4)	(45.1)	(33.8)
Income from continuing operations before income taxes	44.4	41.5	10.7
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Capital expenditures	31.4	28.2	26.9
Depreciation and amortization expense	33.6	31.7	30.2
Identifiable assets	1,365.1	1,340.7	1,436.6
Disposal Group, Held-for-sale, Not Discontinued Operations
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Identifiable assets	0.0	0.0	107.2
Corporate
Segment Reporting Information [Line Items]
Net sales	0.0	0.0	0.0
Cost of sales	0.0	0.0	0.0
Selling, general and administrative expenses	29.0	28.2	28.9
Restructuring and other special charges	0.0	0.0	1.7
Segment operating income (loss)	(29.0)	(28.2)	(30.6)
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Capital expenditures	2.0	0.8	0.1
Depreciation and amortization expense	0.3	0.2	0.4
Identifiable assets	146.4	126.4	120.7
Supply Technologies Segment
Segment Reporting Information [Line Items]
Net sales	775.8	763.4	711.5
Supply Technologies Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	775.8	763.4	711.5
Cost of sales	631.5	639.1	608.2
Selling, general and administrative expenses	69.1	65.1	56.0
Restructuring and other special charges	0.2	0.2	1.6
Segment operating income (loss)	75.0	59.0	45.7
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Capital expenditures	10.5	6.3	3.4
Depreciation and amortization expense	6.7	6.6	6.0
Identifiable assets	465.6	462.8	465.7
Assembly Components
Segment Reporting Information [Line Items]
Net sales	398.7	427.8	388.8
Assembly Components | Operating Segments
Segment Reporting Information [Line Items]
Net sales	398.7	427.8	388.8
Cost of sales	353.6	369.5	366.3
Selling, general and administrative expenses	18.6	23.4	15.8
Restructuring and other special charges	1.1	1.5	5.6
Segment operating income (loss)	25.4	33.4	1.1
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Capital expenditures	8.8	8.4	8.2
Depreciation and amortization expense	13.8	13.4	13.7
Identifiable assets	284.3	289.5	306.1
Engineered Products Segment
Segment Reporting Information [Line Items]
Net sales	481.7	468.5	392.6
Engineered Products Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	481.7	468.5	392.6
Cost of sales	389.7	379.7	307.9
Selling, general and administrative expenses	70.7	64.8	61.5
Restructuring and other special charges	3.6	4.9	8.4
Segment operating income (loss)	17.7	19.1	14.8
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Capital expenditures	10.1	12.7	15.2
Depreciation and amortization expense	12.8	11.5	10.1
Identifiable assets	$ 468.8	$ 462.0	$ 436.9