INCOME TAXES (Narrative) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OperatingLossCarryforwardsLineItems
Deferred tax assets, other tax carryforwards	$ 5,500
Valuation allowance increase	2,200
Valuation allowance	1,240	$ 3,386
Income tax payments	54,000	63,900	$ 79,100
Deferred tax asset, operating loss	5,518	8,328
Unrecognized tax benefits that would affect the effective income tax rate	13,000	$ 10,200	$ 11,000
Operating loss carryforwards				$ 12,700
Industrial Valve Business
OperatingLossCarryforwardsLineItems
Valuation allowance	3,300
Deferred tax asset, operating loss	3,800
Operating loss carryforwards	12,600
Foreign Tax Authority
OperatingLossCarryforwardsLineItems
Operating loss carryforwards related to international operations	3,700
Indefinite lived operating loss carryforwards,	300
Operating loss carryforwards subject to expiration	$ 3,400
Operating loss carryforward, expiration date	Dec. 31, 2026
State And Local Jurisdiction [Member]
OperatingLossCarryforwardsLineItems
Operating loss carryforwards state and local	$ 77,300
Operating loss carryforward, expiration date	Dec. 31, 2039
Other Liabilities [Member]
OperatingLossCarryforwardsLineItems
Interest on income taxes accrued	$ 3,800
Income tax penalties accrued	$ 1,700