GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Goodwill
Goodwill, beginning balance	$ 256,059
Acquisitions	1,400
Foreign currency translation	(1,900)
Goodwill, ending balance	255,580
Water Systems
Goodwill
Goodwill, beginning balance	151,000
Acquisitions	1,400
Foreign currency translation	(1,800)
Goodwill, ending balance	150,600
Fueling Systems
Goodwill
Goodwill, beginning balance	67,600
Acquisitions	0
Foreign currency translation	(100)
Goodwill, ending balance	67,500
Distribution
Goodwill
Goodwill, beginning balance	37,500
Acquisitions	0
Foreign currency translation	0
Goodwill, ending balance	$ 37,500