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DERIVATIVE INSTRUMENTS - Schedule of Cross Currency Swap Derivatives (Details) SFr in Thousands, $ in Thousands	Sep. 30, 2025 USD ($)	Sep. 30, 2025 CHF (SFr)	Feb. 28, 2025 USD ($)	Feb. 28, 2025 CHF (SFr)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 CHF (SFr)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 CHF (SFr)
Cash Flow Hedges | Designated as Hedging Instrument
Derivative [Line Items]
Aggregate Notional Amount	$ 900,000				$ 1,125,000
Fair Value Asset (Liability)	31,673				48,795
Cross Currency Interest Rate Swap One | Cash Flow Hedges | Designated as Hedging Instrument
Derivative [Line Items]
Fair Value Asset (Liability)	$ 0
Cross Currency Interest Rate Swap One | Cash Flow Hedges | Designated as Hedging Instrument | Long
Derivative [Line Items]
Fixed Interest Rate	3.00%	3.00%
Aggregate Notional Amount | SFr		SFr 0				SFr 328,136
Fair Value Asset (Liability)					(4,367)
Cross Currency Interest Rate Swap One | Cash Flow Hedges | Designated as Hedging Instrument | Short
Derivative [Line Items]
Fixed Interest Rate	3.98%	3.98%
Aggregate Notional Amount	$ 0				368,362
Cross Currency Interest Rate Swap Two | Cash Flow Hedges | Designated as Hedging Instrument
Derivative [Line Items]
Fair Value Asset (Liability)	$ (57,034)
Cross Currency Interest Rate Swap Two | Cash Flow Hedges | Designated as Hedging Instrument | Long
Derivative [Line Items]
Fixed Interest Rate	3.25%	3.25%
Aggregate Notional Amount | SFr		SFr 310,887				SFr 0
Fair Value Asset (Liability)					0
Cross Currency Interest Rate Swap Two | Cash Flow Hedges | Designated as Hedging Instrument | Short
Derivative [Line Items]
Fixed Interest Rate	6.14%	6.14%
Aggregate Notional Amount	$ 348,997				0
Cross-currency swap
Derivative [Line Items]
Aggregate Notional Amount			$ 368,400	SFr 328,100			$ 471,600	SFr 420,100
Cross-currency swap | Cash Flow Hedges | Designated as Hedging Instrument
Derivative [Line Items]
Fair Value Asset (Liability)	$ (57,034)				$ (4,367)

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

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- Definition

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+ References

No definition available.

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

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- Definition

Nominal or face amount used to calculate payment on derivative.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

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