Derivative Financial Instruments Narrative (Details)	3 Months Ended
	Mar. 31, 2020 USD ($) contracts	Dec. 31, 2015 USD ($)	Feb. 28, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Apr. 30, 2018 USD ($)	Dec. 31, 2016 USD ($)	Nov. 30, 2015	Oct. 31, 2015 USD ($)
Net unrealized loss on hedging instruments	$ 229,883,000			$ 204,672,000
Total debt	1,350,156,000
Secured Debt [Member]
Total debt	1,350,156,000			$ 950,156,000
Net Unrealized Gain (Loss) on Nonderivative Instruments
Net unrealized loss on hedging instruments	$ 14,400,000				$ 14,400,000
Number of Counterparties [Member]
Derivative counterparties	8			5
Interest Rate Swap [Member]
Number of interest rate derivatives held									1
Derivative, notional amount									$ 214,000,000
Pay fixed interest rate in interest rate swap							1.42%
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	$ 800,000
Interest Rate Cap [Member]
Number of interest rate derivatives held								3
Derivative, notional amount							$ 100,000,000
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	(200,000)
Derivative purchase price		$ 1,700,000
Derivative, cap interest rate							2.00%
Currency Swap [Member]
Number of interest rate derivatives held						1
Derivative, notional amount						$ 56,000,000.0
Pay fixed interest rate in interest rate swap						1.38%
Foreign currency cash flow hedge gain (loss) to be reclassified during next 12 months	500,000
Foreign Exchange Option [Member]
Derivative, notional amount			$ 96,000,000
Derivative purchase price	$ 1,200,000
Forward Contracts [Member]
Number of foreign exchange contracts | contracts	53
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Minimum [Member]
Derivative, notional amount	$ 113,000
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Maximum [Member]
Derivative, notional amount	26,400,000
London Interbank Offered Rate (LIBOR) [Member] | Secured Debt [Member]
Total debt	$ 950,200,000