Acquisitions - Summary of Final Amounts Allocated to Acquired Assets and Assumed Liabilities (Parenthetical) (Detail) - Jamison |
12 Months Ended |
|---|---|
Dec. 31, 2015 | |
| Customer Relationships | |
| Business Acquisition [Line Items] | |
| Intangible asset life | 10 years |
| Non-compete Agreements | |
| Business Acquisition [Line Items] | |
| Intangible asset life | 5 years |