Equity and Accumulated Other Comprehensive Loss (Changes in Accumulated Other Comprehensive Loss by Component) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Equity and Accumulated Other Comprehensive Loss [Abstract]
Foreign currency translation, Beginning balance		$ (91,472)	$ (86,044)
Foreign currency translation, Other comprehensive income (loss) before reclassifications		(17,119)	(3,804)
Foreign currency translation, Net other comprehensive income (loss), net of tax		(17,119)	(3,804)
Foreign currency translation, Ending balance		(108,591)	(89,848)
Unrealized gain (loss) on on derivatives, Beginning balance			292
Unrealized gain (loss) on on derivatives, Other comprehensive income (loss) before reclassifications		(3,781)	213
Unrealized gain (loss) on on derivatives, Amounts reclassified from accumulated other comprehensive loss		126	(171)
Unrealized gain (loss) on on derivatives, Net other comprehensive income (loss), net of tax	[1]	(3,655)	42
Unrealized gain (loss) on on derivatives, Ending balance		(3,655)	334
Total, Other comprehensive income (loss) before reclassifications		(20,900)	(3,591)
Total, Amounts reclassified from accumulated other comprehensive loss		126	(171)
Total, Net other comprehensive income (loss), net of tax		(20,774)	(3,762)
Accumulated other comprehensive income (loss), net of tax, total		$ (112,246)	$ (89,514)	$ (91,472)	$ (85,752)

[1] Net of tax (benefit) expense of $(972) and $11 for the three months ended March 31, 2020 and 2019, respectively.