Summary of Intangible Assets (Detail) - USD ($)
$ in Thousands |
12 Months Ended |
|
Dec. 31, 2015 |
Dec. 31, 2016 |
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Total intangible assets, Gross Carrying Amount |
$ 6,161
|
$ 6,161
|
| Total intangible assets, Accumulated Amortization |
1,947
|
3,183
|
| Total intangible assets, Net |
$ 4,214
|
2,978
|
| Customer relationships |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Total intangible assets, Weighted Average Amortization Period (Years) |
4 years 6 months
|
|
| Total intangible assets, Gross Carrying Amount |
$ 272
|
272
|
| Total intangible assets, Accumulated Amortization |
91
|
151
|
| Total intangible assets, Net |
$ 181
|
121
|
| Customer backlog |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Total intangible assets, Weighted Average Amortization Period (Years) |
1 year 6 months
|
|
| Total intangible assets, Gross Carrying Amount |
$ 93
|
93
|
| Total intangible assets, Accumulated Amortization |
$ 93
|
93
|
| Core technologies |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Total intangible assets, Weighted Average Amortization Period (Years) |
5 years 1 month 6 days
|
|
| Total intangible assets, Gross Carrying Amount |
$ 5,796
|
5,796
|
| Total intangible assets, Accumulated Amortization |
1,763
|
2,939
|
| Total intangible assets, Net |
$ 4,033
|
$ 2,857
|