Operating Leases (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended	6 Months Ended
	May 08, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense		$ 2,300	$ 4,600	$ 0
Related party rental payments		3,223	15,766
Payments to Acquire Property, Plant, and Equipment	2,800		72,384	77,156
Related Party
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense		1,817	3,646
Terminal Facilities
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense		1,000	2,100
Terminal Facilities | Related Party
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense		977	2,005
Related party rental payments		1,000	2,000
Gordon Trucking Company, Inc [Member]
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense				$ 0