Goodwill and Other Intangible Assets - Carrying Amount of Amortizable Intangible Assets and Related Accumulated Amortization (Detail) - USD ($)
$ in Thousands |
12 Months Ended |
|
Dec. 31, 2015 |
Dec. 31, 2014 |
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life (in years) |
9 years 6 months
|
|
| Gross Carrying Amount |
$ 42,893
|
$ 40,443
|
| Accumulated Amortization |
(24,206)
|
(19,504)
|
| Net Carrying Amount |
$ 18,687
|
20,939
|
| Client relationships [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life (in years) |
7 years 6 months
|
|
| Gross Carrying Amount |
$ 25,414
|
23,316
|
| Accumulated Amortization |
(17,550)
|
(14,999)
|
| Net Carrying Amount |
$ 7,864
|
8,317
|
| Trade Name [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life (in years) |
15 years
|
|
| Gross Carrying Amount |
$ 9,251
|
9,334
|
| Accumulated Amortization |
(3,416)
|
(2,358)
|
| Net Carrying Amount |
$ 5,835
|
6,976
|
| Software [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life (in years) |
7 years
|
|
| Gross Carrying Amount |
$ 7,200
|
7,200
|
| Accumulated Amortization |
(3,086)
|
(2,057)
|
| Net Carrying Amount |
$ 4,114
|
5,143
|
| Non-compete [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life (in years) |
5 years
|
|
| Gross Carrying Amount |
$ 586
|
593
|
| Accumulated Amortization |
(117)
|
(90)
|
| Net Carrying Amount |
$ 469
|
503
|
| Technology-Based Intangible Assets [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life (in years) |
3 years
|
|
| Gross Carrying Amount |
$ 442
|
|
| Accumulated Amortization |
(37)
|
0
|
| Net Carrying Amount |
$ 405
|
$ 0
|