Intangible Assets (Schedule Of Indefinite-Lived And Definite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	$ 78,470	$ 59,918
Accumulated amortization	(11,789)	(12,945)
Net book value	66,681	46,973
Trade Names and Trademarks [Member]
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	4,959	800
Net book value	4,959	800
Software Under Development [Member]
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	16,477	13,049
Net book value	16,477	13,049
Customer Relationships [Member]
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	22,538	22,800
Accumulated amortization	(544)	(7,097)
Net book value	21,994	15,703
Software [Member]
Indefinite-Lived and Finite-Lived Intangible Assets By Major Class [Line Items]
Cost	34,496	23,269
Accumulated amortization	(11,245)	(5,848)
Net book value	$ 23,251	$ 17,421