Earnings Per Unit Calculation - Additional Information (Detail) |
12 Months Ended |
|---|---|
|
Dec. 31, 2015
shares
| |
| Subordinated Units [Member] | |
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |
| Potentially dilutive units outstanding | 0 |
| Prior to October 30, 2013 [Member] | |
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |
| Units outstanding prior to IPO | 0 |