Equity (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	Jun. 30, 2021		Mar. 31, 2021	Dec. 31, 2020		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	$ 1,008,706	[1]	$ 1,051,007	$ 1,064,383	[1]	$ 1,113,785	$ 1,160,069	$ 1,237,960
Unrealized gains on available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	4,220			4,594
Unrealized losses on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	(40,043)			(53,075)
Unrealized losses on cumulative translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity				(4,199)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity	$ (35,824)		$ (41,858)	$ (52,680)		$ (59,045)	$ (59,522)	$ (38,707)

[1] Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”).