Acquisitions - Summary of Purchase Consideration (Detail) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Mar. 30, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Business Acquisition [Line Items] | ||||
| Cash paid on date of acquisition | $ 1,805 | $ 703 | ||
| Jamison | ||||
| Business Acquisition [Line Items] | ||||
| Cash paid on date of acquisition | $ 3,550 | |||
| Notes payable to Jamison and Principals of Jamison | 2,165 | |||
| Units issued | 3,562 | |||
| Contingent consideration | 1,429 | $ 1,342 | ||
| Total purchase consideration | $ 10,706 | |||