Concentrations (Details) - Customer Concentration Risk |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Sales Revenue, Segment | |||
| Concentration Risk [Line Items] | |||
| Revenue percentage generated by major customer | 22.00% | 23.00% | 24.00% |
| Sales Revenue, Segment | Maritime & Land Connectivity | |||
| Concentration Risk [Line Items] | |||
| Revenue percentage generated by major customer | 83.00% | 85.00% | 83.00% |
| Accounts Receivable | Maritime & Land Connectivity | |||
| Concentration Risk [Line Items] | |||
| Revenue percentage generated by major customer | 12.00% | 6.00% | |
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|