Segment And Geographic Information (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Net book value	$ 1,740,878	$ 1,564,777
Segment Concentration [Member] | Equipment Leasing [Member] | Total Revenue [Member]
Property, Plant and Equipment [Line Items]
Percentage of operations comprised by segment	96.00%
Segment Concentration [Member] | Equipment Leasing [Member] | Net Income [Member]
Property, Plant and Equipment [Line Items]
Percentage of operations comprised by segment	100.00%
Rail Cars [Member]
Property, Plant and Equipment [Line Items]
Net book value	$ 176,600