v3.4.0.3

SIGNIFICANT ACCOUNTING POLICIES - Other Policies (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 USD ($) segment | Mar. 31, 2015 USD ($) | Dec. 31, 2015 USD ($)
Significant Accounting Policies |  |  |
Allowance for doubtful accounts | $ 0 |  | $ 0
Interest capitalized during the period | 0 | $ 0 |
Deferred loan costs | $ 2,885 |  | 3,261
Number of operating segments | segment | 2 |  |
Asset retirement obligations | $ 0 |  | 0
Liability for deferred taxes | $ 700 |  | 1,100
Credit Concentration Risk | Trade Accounts Receivable | AES |  |  |
Significant Accounting Policies |  |  |
Concentration risk (as a percent) | 27.90% |  |
Credit Concentration Risk | Trade Accounts Receivable | BP Plc |  |  |
Significant Accounting Policies |  |  |
Concentration risk (as a percent) | 20.10% |  |
Azure System Predecessor |  |  |
Significant Accounting Policies |  |  |
Liability for deferred taxes | $ 700 |  | 1,100
Scheduled Maintenance Projects |  |  |
Significant Accounting Policies |  |  |
Property, plant and equipment, Estimated useful lives | 5 years |  |
Natural gas gathering agreement with a minimum revenue commitment (“MRC”) |  |  |
Significant Accounting Policies |  |  |
Agreement period | 10 years |  |
Deferred revenue | $ 18,500 |  | $ 11,600
Deferred revenue, revenue recognized | $ 0 | $ 0 |

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