Revenue - Revenue by Reporting Unit (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total net sales	$ 594,462	$ 622,231
Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(782)	(1,740)
Fluid & Metering Technologies
Disaggregation of Revenue [Line Items]
Total net sales	226,712	242,336
Fluid & Metering Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	226,712	242,336
Fluid & Metering Technologies | Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(149)	(186)
Fluid & Metering Technologies | Energy | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	38,514	39,398
Fluid & Metering Technologies | Valves | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	26,207	29,382
Fluid & Metering Technologies | Water | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	58,336	61,132
Fluid & Metering Technologies | Pumps | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	81,830	88,260
Fluid & Metering Technologies | Agriculture | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	21,974	24,350
Health & Science Technologies
Disaggregation of Revenue [Line Items]
Total net sales	223,456	224,688
Health & Science Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	223,456	224,688
Health & Science Technologies | Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(603)	(602)
Health & Science Technologies | Scientific Fluidics & Optics | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	106,142	107,308
Health & Science Technologies | Sealing Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	55,330	50,506
Health & Science Technologies | Gast | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	27,346	33,909
Health & Science Technologies | Micropump | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	7,715	8,755
Health & Science Technologies | Material Processing Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	27,526	24,812
Fire & Safety/Diversified Products
Disaggregation of Revenue [Line Items]
Total net sales	144,294	155,207
Fire & Safety/Diversified Products | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	144,294	155,207
Fire & Safety/Diversified Products | Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(30)	(952)
Fire & Safety/Diversified Products | Fire & Safety | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	94,068	99,448
Fire & Safety/Diversified Products | BAND-IT | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	25,233	27,912
Fire & Safety/Diversified Products | Dispensing | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	$ 25,023	$ 28,799