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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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Amount, before tax, of increase (decrease) in the cumulative translation adjustment from gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

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Derivative Instruments and Hedging Activities - Foreign Exchange Currency Forward Contracts Not Designated as Hedging Instruments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jul. 31, 2019
Derivative [Line Items]
Cash flow hedge, interest rate swap agreements	$ (39,947,000)	$ (8,783,000)	$ (973,000)
Foreign Exchange Currency Forward Contracts	17,005,000	6,003,000	11,070,000
Net Investment Hedging
Derivative [Line Items]
Cumulative net losses	28,641,000
Interest Rate Swap Agreements
Derivative [Line Items]
Notional amount of derivatives	350,000,000	350,000,000		$ 350,000,000
Cumulative net losses	21,062,000
Interest Rate Swap Agreements \| Cash Flow Hedging
Derivative [Line Items]
Derivative liability	(21,062,000)	(8,774,000)
Interest Rate Swap Agreements \| Designated Hedging Instruments
Derivative [Line Items]
Cash flow hedge, interest rate swap agreements	12,288,000	7,801,000	973,000
August 2023 Cross Currency Swap Agreements \| Net Investment Hedging
Derivative [Line Items]
Derivative liability	(8,229,000)	(982,000)
August 2023 Cross Currency Swap Agreements \| Designated Hedging Instruments \| Net Investment Hedging
Derivative [Line Items]
Net investment hedge, currency swap agreements	7,247,000	982,000	0
February 2026 Cross Currency Swap Agreements \| Net Investment Hedging
Derivative [Line Items]
Derivative liability	(20,412,000)	0
February 2026 Cross Currency Swap Agreements \| Designated Hedging Instruments \| Net Investment Hedging
Derivative [Line Items]
Net investment hedge, currency swap agreements	20,412,000	0	0
Foreign exchange contracts
Derivative [Line Items]
Net payments	0	737,000	5,797,000
Foreign exchange contracts \| Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Notional amount of derivatives	0	0
Foreign Exchange Currency Forward Contracts	$ 0	$ 737,000	$ 4,954,000