SEGMENT AND GEOGRAPHIC INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Segment Reporting Information
Net sales	$ 484,551	$ 451,470
Operating income/(loss)	52,606	39,941
Total assets	1,803,446		$ 1,694,201
Corporate And Eliminations
Segment Reporting Information
Net sales	(37,700)	(28,500)
Operating income/(loss)	(21,900)	(20,400)
Total assets	51,400		47,200
Water Systems | Operating Segments
Segment Reporting Information
Net sales	306,600	272,600
Operating income/(loss)	49,000	33,200
Total assets	1,055,900		1,017,500
Water Systems | United States & Canada
Segment Reporting Information
Net sales	159,400	134,700
Water Systems | United States & Canada | Intersegment Sales
Segment Reporting Information
Net sales	37,700	28,500
Water Systems | Latin America
Segment Reporting Information
Net sales	40,300	37,900
Water Systems | EMEA
Segment Reporting Information
Net sales	50,400	51,000
Water Systems | Asia Pacific
Segment Reporting Information
Net sales	18,800	20,500
Distribution | Operating Segments
Segment Reporting Information
Net sales	143,000	134,900
Operating income/(loss)	4,700	9,400
Total assets	423,000		360,400
Distribution | United States & Canada
Segment Reporting Information
Net sales	143,000	134,900
Distribution | United States & Canada | Intersegment Sales
Segment Reporting Information
Net sales	0	0
Fueling Systems | Operating Segments
Segment Reporting Information
Net sales	72,700	72,500
Operating income/(loss)	20,800	17,700
Total assets	273,100		$ 269,100
Fueling Systems | Intersegment Sales
Segment Reporting Information
Net sales	0	0
Fueling Systems | United States & Canada
Segment Reporting Information
Net sales	54,000	51,900
Fueling Systems | All Other
Segment Reporting Information
Net sales	$ 18,700	$ 20,600