Property and Equipment (Details) - USD ($)
|
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Property, Plant and Equipment [Line Items] |
|
|
|
| Total property and equipment |
$ 138,681,000
|
$ 87,879,000
|
|
| Accumulated depreciation |
(8,326,000)
|
(4,326,000)
|
|
| Construction in progress |
2,655,000
|
506,000
|
|
| Property and equipment, net |
133,010,000
|
84,059,000
|
|
| Capitalized interest |
$ 0
|
230,000
|
$ 0
|
| Minimum |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, useful life |
5 years
|
|
|
| Maximum |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, useful life |
20 years
|
|
|
| Land |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Total property and equipment |
$ 9,549,000
|
3,279,000
|
|
| Trackage and facilities |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Total property and equipment |
$ 110,557,000
|
78,938,000
|
|
| Property and equipment, useful life |
20 years
|
|
|
| Pipeline |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Total property and equipment |
$ 10,295,000
|
0
|
|
| Property and equipment, useful life |
20 years
|
|
|
| Equipment |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Total property and equipment |
$ 8,237,000
|
5,611,000
|
|
| Equipment | Minimum |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, useful life |
5 years
|
|
|
| Equipment | Maximum |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property and equipment, useful life |
10 years
|
|
|
| Furniture |
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Total property and equipment |
$ 43,000
|
$ 51,000
|
|
| Property and equipment, useful life |
5 years
|
|
|