Business Segments and Geographic Information - Schedule of Information on Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total net sales	$ 605,997	$ 624,246	$ 642,099	$ 622,231	$ 614,094	$ 622,888	$ 634,360	$ 612,324	$ 2,494,573	$ 2,483,666	$ 2,287,312
Total operating income	134,173	$ 141,765	$ 155,283	$ 147,782	139,441	$ 145,133	$ 147,831	$ 136,683	579,003	569,088	502,556
Interest expense									44,341	44,134	44,889
Other (income) expense - net									1,759	(3,985)	2,394
Income before taxes									532,903	528,939	455,273
Total assets	3,813,912				3,473,857				3,813,912	3,473,857	3,399,628
Depreciation and Amortization									76,876	77,544	84,216
Total capital expenditures									50,912	56,089	43,858
Gain (loss) on sale of business									0	0	9,273
Intersegment elimination
Segment Reporting Information [Line Items]
Total net sales									(3,671)	(1,333)	(1,309)
Corporate Office
Segment Reporting Information [Line Items]
Total operating income									(71,711)	(80,252)	(65,069)
Total assets	330,694				230,637				330,694	230,637	230,160
Depreciation and Amortization									670	742	801
Total capital expenditures									1,815	191	2,937
Fluid & Metering Technologies
Segment Reporting Information [Line Items]
Total net sales									956,523	951,275	880,648
Total operating income									285,256	275,060	241,030
Total assets	1,150,712				1,107,777				1,150,712	1,107,777	1,101,580
Depreciation and Amortization									22,152	22,370	23,587
Total capital expenditures									17,285	19,541	18,218
Fluid & Metering Technologies | Intersegment elimination
Segment Reporting Information [Line Items]
Total net sales									505	277	309
Fluid & Metering Technologies | Operating Segments
Segment Reporting Information [Line Items]
Total net sales									957,028	951,552	880,957
Health & Science Technologies
Segment Reporting Information [Line Items]
Total net sales									912,623	895,970	819,719
Total operating income									200,200	205,679	179,567
Total assets	1,507,108				1,329,368				1,507,108	1,329,368	1,323,373
Depreciation and Amortization									39,721	39,939	45,287
Total capital expenditures									22,001	26,039	16,340
Health & Science Technologies | Intersegment elimination
Segment Reporting Information [Line Items]
Total net sales									1,823	449	412
Health & Science Technologies | Operating Segments
Segment Reporting Information [Line Items]
Total net sales									914,446	896,419	820,131
Fire & Safety/ Diversified Products
Segment Reporting Information [Line Items]
Total net sales									625,427	636,421	586,945
Total operating income									165,258	168,601	147,028
Total assets	$ 825,398				$ 806,075				825,398	806,075	744,515
Depreciation and Amortization									14,333	14,493	14,541
Total capital expenditures									9,811	10,318	6,363
Fire & Safety/ Diversified Products | Intersegment elimination
Segment Reporting Information [Line Items]
Total net sales									1,343	607	588
Fire & Safety/ Diversified Products | Operating Segments
Segment Reporting Information [Line Items]
Total net sales									$ 626,770	$ 637,028	$ 587,533