SEGMENT INFORMATION SEGMENT INFORMATION (Product Line) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net Sales	$ 655,771	$ 614,880	$ 638,996	$ 578,314	$ 648,622	$ 595,393	$ 620,298	$ 547,522	$ 2,487,961	$ 2,411,835	$ 2,271,026
Flow Control [Member]
Segment Reporting Information [Line Items]
Net Sales									1,051,821	1,008,262	899,705
Controls [Member]
Segment Reporting Information [Line Items]
Net Sales									1,130,593	1,090,703	1,075,218
Surface Technologies [Member]
Segment Reporting Information [Line Items]
Net Sales									$ 305,547	$ 312,870	$ 296,103