GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($)
Goodwill
Goodwill, beginning balance	$ 338,501
Goodwill, Purchase Accounting Adjustments	100
Foreign currency translation	2,200
Goodwill, ending balance	391,526
Goodwill, Acquired During Period	50,700
Water Systems
Goodwill
Goodwill, beginning balance	217,600
Goodwill, Purchase Accounting Adjustments	100
Foreign currency translation	2,100
Goodwill, ending balance	270,500
Goodwill, Acquired During Period	50,700
Distribution
Goodwill
Goodwill, beginning balance	50,600
Goodwill, Purchase Accounting Adjustments	0
Foreign currency translation	0
Goodwill, ending balance	50,600
Goodwill, Acquired During Period	0
Energy Systems
Goodwill
Goodwill, beginning balance	70,300
Goodwill, Purchase Accounting Adjustments	0
Foreign currency translation	100
Goodwill, ending balance	70,400
Goodwill, Acquired During Period	$ 0