Quarterly report pursuant to Section 13 or 15(d)

Leased Properties - Portland Terminal Facility (Details)

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Leased Properties - Portland Terminal Facility (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
USD ($)
a
tanks
bbl
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
a
tanks
bbl
Sep. 30, 2014
USD ($)
Portland Terminal Facility [Member]        
Sale Leaseback Transaction [Line Items]        
Acres owned | a 39   39  
Number Of Tanks | tanks 84   84  
Crude oil and petroleum product storage capacity | bbl 1,500,000   1,500,000  
Estimated useful lives of assets     30 years  
Depreciation $ 430 $ 374 $ 1,334 $ 1,000
Portland Terminal Facility [Member]        
Sale Leaseback Transaction [Line Items]        
Construction and Development Costs     10,000  
Additional Expected Project Costs $ 9,700   $ 9,700