|
Partners' Capital (Units Outstanding) (Details)
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Aug. 09, 2013
|
Dec. 31, 2012
|
|---|---|---|---|---|
| Limited partner common units | 22,670,000 | 7,414,000 | ||
| General partner units | 392,000 | 185,000 | ||
| AIM Midstream Holdings No. of units outstanding [Member] | ||||
| Preferred units outstanding | 0 | |||
| Limited partner common units | 22,670,000 | 7,414,000 | 4,639,000 | |
| Limited partner subordinated units | 0 | 0 | 4,526,066 | 4,526,000 |
| General partner units | 392,000 | 185,000 | 185,000 | |
| Series A | ||||
| Preferred units outstanding | 5,745,000 | 5,279,000 | ||
| Series B | ||||
| Preferred units outstanding | 1,255,000 | 0 | 0 |