|
Earnings Per Unit - Calculation of Earnings (Loss) Per Unit (Parenthetical) (Detail)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Earnings Per Unit [Line Items] | |||
| General partner's interest in net income, percentage | 0.10% | 0.10% | 0.10% |
| Supplemental EPU [Member] | |||
| Earnings Per Unit [Line Items] | |||
| General partner's interest in net income, percentage | 0.10% | 0.10% | 0.10% |