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DERIVATIVE INSTRUMENTS (Schedule of Cross Currency Swap Derivatives) (Details) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CHF (SFr) | Dec. 31, 2017 USD ($) | Oct. 02, 2017 USD ($) | Oct. 02, 2017 CHF (SFr)
--- | --- | --- | --- | --- | ---
Codman | Cross Currency Interest Rate Swap | Long |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Aggregate Notional Amount | SFr |  |  |  |  | SFr 291,200,000.0
Codman | Cross Currency Interest Rate Swap | Short |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Aggregate Notional Amount |  |  |  | $ 300,000,000 |
Cash Flow Hedging | Designated as Hedging Instrument |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fair Value Asset (Liability) | $ 619,000,000 |  | $ 592,000,000 |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap One |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fair Value Asset (Liability) | $ (215,000) |  | (742,000) |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap One | Long |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fixed Rate | 1.75% | 1.75% |  |  |
Aggregate Notional Amount | SFr |  | SFr 97,065,000 |  |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap One | Short |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fixed Rate | 4.38% | 4.38% |  |  |
Aggregate Notional Amount | $ 100,000,000 |  |  |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap Two |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fair Value Asset (Liability) | $ (422,000) |  | (610,000) |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap Two | Long |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fixed Rate | 1.85% | 1.85% |  |  |
Aggregate Notional Amount | SFr |  | SFr 48,533,000 |  |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap Two | Short |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fixed Rate | 4.46% | 4.46% |  |  |
Aggregate Notional Amount | $ 50,000,000 |  |  |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap Three |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fair Value Asset (Liability) | $ (2,193,000) |  | (2,605,000) |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap Three | Long |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fixed Rate | 1.95% | 1.95% |  |  |
Aggregate Notional Amount | SFr |  | SFr 145,598,000 |  |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap Three | Short |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fixed Rate | 4.52% | 4.52% |  |  |
Aggregate Notional Amount | $ 150,000,000 |  |  |  |
Cash Flow Hedging | Designated as Hedging Instrument | Codman | Cross Currency Interest Rate Swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fair Value Asset (Liability) | $ (2,830,000) |  | $ (3,957,000) |  |

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