Intangible Assets (Schedule Of Indefinite-Lived And Definite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	$ 348,404	$ 317,355
Accumulated amortization	(115,024)	(71,733)
Net book value	233,380	245,622
Trade Names and Trademarks [Member]
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	53,319	53,409
Accumulated amortization	(2,028)	(1,201)
Net book value	51,291	52,208
Customer Relationships [Member]
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	124,865	124,986
Accumulated amortization	(34,666)	(22,010)
Net book value	90,199	102,976
Software Assets [Member]
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	157,776	127,320
Accumulated amortization	(78,330)	(48,522)
Net book value	79,446	78,798
Software Under Development [Member]
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	12,444	11,640
Net book value	$ 12,444	$ 11,640