Business Segments - Schedule of Information on Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 594,462	$ 622,231
Operating income	139,941	147,782
Interest expense	10,877	10,921
Other (income) expense - net	1,565	(140)
Income before income taxes	127,499	137,001
Total assets	3,943,677		$ 3,813,912
Intersegment elimination
Segment Reporting Information [Line Items]
Net sales	(782)	(1,740)
Corporate office
Segment Reporting Information [Line Items]
Operating income	(17,510)	(18,566)
Total assets	309,050		330,694
Fluid & Metering Technologies
Segment Reporting Information [Line Items]
Net sales	226,712	242,336
Operating income	66,771	71,866
Fluid & Metering Technologies | Intersegment elimination
Segment Reporting Information [Line Items]
Net sales	149	186
Fluid & Metering Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	226,861	242,522
Total assets	1,349,083		1,150,712
Health & Science Technologies
Segment Reporting Information [Line Items]
Net sales	223,456	224,688
Operating income	52,643	54,154
Health & Science Technologies | Intersegment elimination
Segment Reporting Information [Line Items]
Net sales	603	602
Health & Science Technologies | Operating Segments
Segment Reporting Information [Line Items]
Net sales	224,059	225,290
Total assets	1,488,273		1,507,108
Fire & Safety/Diversified Products
Segment Reporting Information [Line Items]
Net sales	144,294	155,207
Operating income	38,037	40,328
Fire & Safety/Diversified Products | Intersegment elimination
Segment Reporting Information [Line Items]
Net sales	30	952
Fire & Safety/Diversified Products | Operating Segments
Segment Reporting Information [Line Items]
Net sales	144,324	$ 156,159
Total assets	$ 797,271		$ 825,398