DERIVATIVE INSTRUMENTS - Narrative (Details) SFr in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Nov. 28, 2017 USD ($)	Oct. 02, 2017 CHF (SFr)	Oct. 02, 2017 USD ($)
Derivative [Line Items]
Loss recorded to AOCI	$ (7,913,000)	$ (586,000)
Pre-tax income recorded in AOCI related to cash flow hedges to be reclassified to earnings in the next twelve months	10,200,000
Cross-currency swap | Codman
Derivative [Line Items]
Loss, reclassification from AOCI, foreign currency rate translation, intercompany loan	6,400,000
Gain reclassified into income	1,900,000
Pre-tax income recorded in AOCI related to cash flow hedges to be reclassified to earnings in the next twelve months	7,700,000
Cross-currency swap | Short | Codman
Derivative [Line Items]
Notional amount					$ 300,000,000.0
Cross-currency swap | Long | Codman
Derivative [Line Items]
Notional amount | SFr				SFr 291.2
Not Designated as Hedging Instrument | Foreign Exchange Forward
Derivative [Line Items]
Notional amount			$ 8,900,000.0
Loss from the change in fair value	200,000
Derivative liability, fair value	100,000
Other income (expense) | Cross-currency swap
Derivative [Line Items]
Loss recorded to AOCI	7,027,000
Other income (expense) | Cross-currency swap | Codman
Derivative [Line Items]
Loss recorded to AOCI	$ 7,000,000