Information on Business Segments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) Segment	Sep. 30, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment			2
Net sales	$ 325,059	$ 269,059	$ 947,846	$ 835,266
Operating profit	43,709	31,243	114,632	90,672
Interest expense	4,027	3,701	12,443	11,924
Other expense (income), net	1,217	47	3,952	2,700
Industrial
Segment Reporting Information [Line Items]
Net sales	231,548	196,911	686,207	561,039
Aerospace
Segment Reporting Information [Line Items]
Net sales	93,511	72,148	261,639	274,227
Operating Segments | Industrial
Segment Reporting Information [Line Items]
Net sales	231,549	196,916	686,220	561,047
Operating profit	30,067	24,438	78,635	42,063
Operating Segments | Aerospace
Segment Reporting Information [Line Items]
Net sales	93,511	72,148	261,639	274,227
Operating profit	13,642	6,805	35,997	48,609
Intersegment sales
Segment Reporting Information [Line Items]
Net sales	$ (1)	$ (5)	$ (13)	$ (8)