|
Reporting Segments Assets (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Segment Reporting Information [Line Items] | ||
| Total assets | $ 916,644 | $ 382,075 |
| Gathering And Processing [Member] | ||
| Segment Reporting Information [Line Items] | ||
| Total assets | 686,395 | 178,869 |
| Transmission [Member] | ||
| Segment Reporting Information [Line Items] | ||
| Total assets | 132,767 | 131,136 |
| Terminals [Member] | ||
| Segment Reporting Information [Line Items] | ||
| Total assets | 71,180 | 60,873 |
| Other Segments [Member] | ||
| Segment Reporting Information [Line Items] | ||
| Total assets | $ 26,302 | $ 11,197 |