SEGMENT AND GEOGRAPHIC INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting Information
Net sales	$ 538,431	$ 551,672	$ 1,592,163	$ 1,554,280
Operating income/(loss)	78,104	80,044	211,613	200,967
Total assets	1,725,296		1,725,296		$ 1,694,201
Corporate And Eliminations
Segment Reporting Information
Net sales	(24,300)	(24,800)	(88,000)	(89,800)
Operating income/(loss)	(11,100)	(13,100)	(47,400)	(50,800)
Total assets	48,200		48,200		47,200
Water Systems | Operating Segments
Segment Reporting Information
Net sales	295,800	293,100	924,100	876,200
Operating income/(loss)	52,700	45,500	152,500	127,700
Total assets	1,033,400		1,033,400		1,017,500
Water Systems | United States & Canada
Segment Reporting Information
Net sales	157,700	158,900	494,000	452,000
Water Systems | United States & Canada | Intersegment Sales
Segment Reporting Information
Net sales	24,300	24,800	88,000	89,800
Water Systems | Latin America
Segment Reporting Information
Net sales	45,500	41,300	127,800	120,900
Water Systems | EMEA
Segment Reporting Information
Net sales	48,700	46,000	153,700	146,700
Water Systems | Asia Pacific
Segment Reporting Information
Net sales	19,600	22,100	60,600	66,800
Distribution | Operating Segments
Segment Reporting Information
Net sales	189,200	193,200	525,300	519,200
Operating income/(loss)	10,700	19,000	33,200	51,700
Total assets	375,600		375,600		360,400
Distribution | United States & Canada
Segment Reporting Information
Net sales	189,200	193,200	525,300	519,200
Distribution | United States & Canada | Intersegment Sales
Segment Reporting Information
Net sales	0	0	0	0
Fueling Systems | Operating Segments
Segment Reporting Information
Net sales	77,700	90,200	230,800	248,700
Operating income/(loss)	25,800	28,600	73,300	72,400
Total assets	268,100		268,100		$ 269,100
Fueling Systems | Intersegment Sales
Segment Reporting Information
Net sales	0	0	0	0
Fueling Systems | United States & Canada
Segment Reporting Information
Net sales	58,500	66,500	172,800	182,500
Fueling Systems | All Other
Segment Reporting Information
Net sales	19,200	23,700	58,000	66,200
Consolidated
Segment Reporting Information
Net sales	$ 538,400	$ 551,700	$ 1,592,200	$ 1,554,300