GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)
Goodwill
Goodwill, beginning balance	$ 329,630
Acquisitions	0
Goodwill, Purchase Accounting Adjustments	(500)
Foreign currency translation	300
Goodwill, ending balance	329,388
Water Systems
Goodwill
Goodwill, beginning balance	213,900
Acquisitions	0
Goodwill, Purchase Accounting Adjustments	0
Foreign currency translation	400
Goodwill, ending balance	214,300
Fueling Systems
Goodwill
Goodwill, beginning balance	70,700
Acquisitions	0
Goodwill, Purchase Accounting Adjustments	0
Foreign currency translation	(100)
Goodwill, ending balance	70,600
Distribution
Goodwill
Goodwill, beginning balance	45,000
Acquisitions	0
Goodwill, Purchase Accounting Adjustments	(500)
Foreign currency translation	0
Goodwill, ending balance	$ 44,500