Earnings Per Unit Calculation - Summary of Weighted Average Common Units Outstanding (Detail) - shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Weighted average limited partner common units - basic | 10,975,941 | 10,131,928 | 10,071,970 |
| Dilutive effect of unvested restricted and phantom units | 165,392 | 63,638 | 0 |
| Weighted average limited partner common units - dilutive | 11,141,333 | 10,195,566 | 10,071,970 |