Commitments And Contingencies (Future Minimum Rental Payments Under All Non-Cancelable Operating Leases) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Property Subject to or Available for Operating Lease [Line Items]
2013	$ 30,501
2014	23,251
2015	19,008
2016	14,955
2017	13,641
2018 and thereafter	48,824
Total minimum lease obligations	150,180
Office Space [Member]
Property Subject to or Available for Operating Lease [Line Items]
2013	1,366
2014	1,347
2015	1,315
2016	1,174
2017	1,169
2018 and thereafter	4,192
Total minimum lease obligations	10,563
Transportation Equipment [Member]
Property Subject to or Available for Operating Lease [Line Items]
2013	15,322
2014	13,568
2015	9,906
2016	7,661
2017	6,352
2018 and thereafter	12,886
Total minimum lease obligations	65,695
Terminals and Tanks [Member]
Property Subject to or Available for Operating Lease [Line Items]
2013	13,813
2014	8,336
2015	7,787
2016	6,120
2017	6,120
2018 and thereafter	31,746
Total minimum lease obligations	$ 73,922