Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ 1,160,069	$ 1,237,960	$ 1,009,471	$ 1,064,115
Unrealized gains on available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	2,959	2,756
Unrealized losses on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(58,282)	(37,264)
Unrealized losses on cumulative translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(4,199)	(4,199)
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ (59,522)	$ (38,707)	$ (29,594)	$ (17,270)