Amount of short-term and long-term debt and lease obligation.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, after accumulated amortization, of debt discount (premium).

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Debt - Summary of Senior Unsecured Credit Facility (Details) $ in Thousands, € in Millions, £ in Millions, ¥ in Billions	3 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2020 JPY (¥)	Mar. 31, 2020 EUR (€)	Mar. 31, 2020 GBP (£)	Mar. 27, 2020 USD ($)	Feb. 20, 2020 USD ($)	Dec. 31, 2019 USD ($)
Senior Unsecured Credit Facility
Debt outstanding	$ 366,604						$ 201,267
Unamortized discount	26,344
Unamortized deferred financing costs	22,148					$ 10,000
Unsecured Term Loans:
Senior Unsecured Credit Facility
Debt outstanding	$ 291,121						0
Unsecured Term Loans: \| GBP
Senior Unsecured Credit Facility
Variable interest rate (percentage)	0.95%
Debt outstanding	$ 185,395			£ 150.0		$ 193,100	0
Unsecured Term Loans: \| EUR
Senior Unsecured Credit Facility
Variable interest rate (percentage)	0.95%
Debt outstanding	$ 105,726		€ 96.5		$ 105,900		0
Unamortized discount	(1,400)
Unsecured Revolving Credit Facility:
Senior Unsecured Credit Facility
Debt outstanding	75,483						201,267
Unsecured Revolving Credit Facility: \| GBP
Senior Unsecured Credit Facility
Debt outstanding	$ 0						47,534
Unsecured Revolving Credit Facility: \| GBP \| LIBOR
Senior Unsecured Credit Facility
Variable interest rate (percentage)	0.85%
Unsecured Revolving Credit Facility: \| EUR
Senior Unsecured Credit Facility
Debt outstanding	$ 43,276		€ 39.5				131,438
Unsecured Revolving Credit Facility: \| EUR \| EURIBOR
Senior Unsecured Credit Facility
Variable interest rate (percentage)	0.85%
Unsecured Revolving Credit Facility: \| JPY
Senior Unsecured Credit Facility
Debt outstanding	$ 22,207	¥ 2.4					22,295
Unsecured Revolving Credit Facility: \| JPY \| JPY LIBOR
Senior Unsecured Credit Facility
Variable interest rate (percentage)	0.85%
Unsecured Revolving Credit Facility: \| USD
Senior Unsecured Credit Facility
Debt outstanding	$ 10,000						$ 0
Unsecured Revolving Credit Facility: \| USD \| USD LIBOR
Senior Unsecured Credit Facility
Variable interest rate (percentage)	0.85%