Transactions with Related Parties - Related Party Revenue and Deferred Revenue (Details) - USD ($)
|
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Related Party Transaction [Line Items] |
|
|
|
| Deferred revenue, current portion — related party |
$ 5,485,000
|
$ 5,256,000
|
|
| Accounts payable and accrued expenses — related party |
232,000
|
492,000
|
|
| USD Marketing [Member] |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Deferred revenue, current portion — related party |
4,200,000
|
2,600,000
|
|
| Accounts payable and accrued expenses — related party |
1,700,000
|
0
|
|
| Related party | J. Aron [Member] |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Related party sales |
|
3,963,000
|
$ 2,624,000
|
| Related party | J. Aron [Member] | Terminalling services |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Related party sales |
|
3,499,000
|
0
|
| Related party | J. Aron [Member] | Freight and other reimbursables [Member] |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Related party sales |
|
464,000
|
2,624,000
|
| Related party | USD Marketing [Member] |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Related party sales |
10,402,000
|
0
|
0
|
| Related party | USD Marketing [Member] | Terminalling services |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Related party sales |
5,228,000
|
0
|
0
|
| Related party | USD Marketing [Member] | Freight and other reimbursables [Member] |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Related party sales |
85,000
|
0
|
0
|
| Related party | USD Marketing [Member] | Fleet Leases [Member] |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Related party sales |
4,123,000
|
0
|
0
|
| Related party | USD Marketing [Member] | Fleet services |
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
| Related party sales |
$ 966,000
|
$ 0
|
$ 0
|