DERIVATIVE INSTRUMENTS (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 28, 2017 USD ($)	Oct. 02, 2017 USD ($)	Oct. 02, 2017 CHF (SFr)
Derivative [Line Items]
Gain recorded in other income, net related to change in fair value, foreign currency translation	$ 13,400,000	$ 2,958,000	$ 0
Unrealized derivative (loss) gain arising during period	11,709,000	(3,425,000)	$ 1,871,000
Foreign Currency Forward Contract | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount				$ 8,900,000.0
Gain (loss) from change in fair value of the contract	(200,000)	100,000
Cross Currency Interest Rate Swap | Codman
Derivative [Line Items]
Gain recorded in other income, net related to change in fair value, foreign currency translation	2,200,000	1,100,000
Unrealized derivative (loss) gain arising during period	9,100,000	(2,100,000)
Gain reclassified into income	7,900,000	$ 1,900,000
Amount estimated to be reclassified to earnings during next twelve months	7,600,000
Cross Currency Interest Rate Swap | Short | Codman
Derivative [Line Items]
Notional amount					$ 300,000,000
Cross Currency Interest Rate Swap | Long | Codman
Derivative [Line Items]
Notional amount | SFr						SFr 291,200,000.0
Cross Currency Interest Rate Swap | Designated as Hedging Instrument
Derivative [Line Items]
Gain recorded in AOCI, change in fair value	1,700,000
Cross Currency Interest Rate Swap | Designated as Hedging Instrument | Net Investment Hedging
Derivative [Line Items]
Gain reclassified into income	2,400,000
Amount estimated to be reclassified to earnings during next twelve months	$ 8,900,000