Fair value of all liability derivatives designated as cash flow hedging instruments.

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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jul. 20, 2017
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net after-tax loss included in accumulated other comprehensive earnings		$ (315)	$ 37	$ (1,547)
Derivative assets		322	2,758
Derivative liabilities		8,455	401
Derivative Contracts Not Designated as Hedging Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets		322	206
Derivative liabilities		146	401
Cross Currency Swap Contract \| Prepaid and other \| Derivative Contracts Not Designated as Hedging Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets		0	0
Cross Currency Swap Contract \| Accounts payable and accrued liabilities \| Derivative Contracts Not Designated as Hedging Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative liabilities		0	0
Cross Currency Swap Contract \| Derivatives in Cash Flow Hedging Relationships
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount hedged					$ 280,000
Net after-tax loss included in accumulated other comprehensive earnings		1,400	1,700
Fair value of derivative liability		8,300
Changes in cross currency swap: interest component \| Derivatives in Cash Flow Hedging Relationships
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount expected to be recognized in earnings in next twelve months related to cross currency swap contract		300
Foreign Exchange Contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate amount of forward exchange contracts		52,500
Foreign Exchange Contracts \| Prepaid and other \| Derivative Contracts Not Designated as Hedging Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets		322	206
Foreign Exchange Contracts \| Accounts payable and accrued liabilities \| Derivative Contracts Not Designated as Hedging Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative liabilities		$ 146	$ 401
Notes payable
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Proceeds from debt	$ 280,000