|
Concentrations (Details)
|
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Dec. 31, 2013
|
|
| Risks and Uncertainties [Abstract] | |||||
| Percentage of investments in securities of energy infrastructure companies in relation to aggregate assets | 8.00% | ||||
| Term of contract | 10 years | ||||
| Natural gas contract with Mowood, expiration year | 2015 | ||||
| Revenue related to the DOD contract | 84.00% | 85.00% | 88.00% | 87.00% | |
| Percentage of amounts due from the department of defense in relation to consolidated accounts receivable | 83.00% | 83.00% | 91.00% | ||
| Percentage of payment to supplier of natural gas in relation to cost of sales | 55.00% | 52.00% | 69.00% | 31.00% | |
| X | ||||||||||
|
- Definition
Contract term. No definition available.
|
| X | ||||||||||
|
- Definition
Natural gas contract expiration year. No definition available.
|
| X | ||||||||||
|
- Definition
Percentage of amounts due from the department of defense in relation to consolidated accounts receivable. No definition available.
|
| X | ||||||||||
|
- Definition
Percentage of payment to supplier of natural gas in relation to cost of sales. No definition available.
|
| X | ||||||||||
|
- Definition
Percentage of revenue related to the department of defense contract. 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
|