Equity and Equity-Based Compensation - Schedule of Changes in Partnership's Units (Detail) - shares
|
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Common Unitholders - Public |
|
|
|
| Increase (Decrease) in Partners' Capital [Roll Forward] |
|
|
|
| Beginning balance (in shares) |
8,977,378
|
8,777,922
|
8,506,666
|
| Ending balance (in shares) |
9,207,473
|
8,977,378
|
8,777,922
|
| Common Unitholders - Public | Employee Bonus |
|
|
|
| Increase (Decrease) in Partners' Capital [Roll Forward] |
|
|
|
| Units / Awards issued (in shares) |
161,018
|
133,634
|
|
| Common Unitholders - Public | Phantom Share Units (PSUs) |
|
|
|
| Increase (Decrease) in Partners' Capital [Roll Forward] |
|
|
|
| Units / Awards issued (in shares) |
55,581
|
58,358
|
|
| Common Unitholders - Public | Directors |
|
|
|
| Increase (Decrease) in Partners' Capital [Roll Forward] |
|
|
|
| Units / Awards issued (in shares) |
13,496
|
7,464
|
27,401
|
| Common Unitholders - Affiliated |
|
|
|
| Increase (Decrease) in Partners' Capital [Roll Forward] |
|
|
|
| Beginning balance (in shares) |
2,034,378
|
2,034,378
|
1,571,970
|
| Ending balance (in shares) |
2,034,378
|
2,034,378
|
2,034,378
|
| Subordinated Unitholders - Affiliated |
|
|
|
| Increase (Decrease) in Partners' Capital [Roll Forward] |
|
|
|
| Beginning balance (in shares) |
10,071,970
|
10,071,970
|
10,071,970
|
| Ending balance (in shares) |
10,071,970
|
10,071,970
|
10,071,970
|
| Castle Oil | Common Unitholders - Public |
|
|
|
| Increase (Decrease) in Partners' Capital [Roll Forward] |
|
|
|
| Units / Awards issued (in shares) |
|
|
243,855
|
| Kildair | Common Unitholders - Affiliated |
|
|
|
| Increase (Decrease) in Partners' Capital [Roll Forward] |
|
|
|
| Units / Awards issued (in shares) |
|
|
462,408
|