Changes in Operations RCP&E (Details) - May. 30, 2014 - RCP&E [Member] $ in Thousands	USD ($) employee carload mile
Cash purchase price	$ 218,600
Track miles | mile	670
Carloads shipped annually | carload	63,000
Number of employees | employee	180
Purchase Price Allocations [Abstract]
Materials and supplies	$ 3,621
Prepaid expenses and other	116
Property and equipment	217,032
Deferred income tax assets	325
Total assets	221,094
Current portion of long-term debt	1,121
Accounts payable and accrued expenses	108
Long-term debt, less current portion	1,260
Net assets	$ 218,605