Acquisitions - Components of Identified Intangible Assets Associated with Acquisition and their Estimated Useful Lives (Detail) - USD ($)
$ in Thousands |
|
3 Months Ended |
May 05, 2016 |
Apr. 30, 2017 |
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Identified intangible assets, Useful life |
|
2 years 3 months 18 days
|
| Customer Contracts [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Identified intangible assets, Useful life |
|
2 years 3 months 18 days
|
| Non-Compete Agreements [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Identified intangible assets, Useful life |
|
2 years 4 months 24 days
|
| DCC Labs [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Identified intangible assets, Fair Value |
$ 810
|
|
| DCC Labs [Member] | Tradename [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Identified intangible assets, Useful life |
4 years
|
|
| Identified intangible assets, Fair Value |
$ 60
|
|
| DCC Labs [Member] | Customer Contracts [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Identified intangible assets, Useful life |
2 years
|
|
| Identified intangible assets, Fair Value |
$ 230
|
|
| DCC Labs [Member] | Non-Compete Agreements [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Identified intangible assets, Useful life |
2 years
|
|
| Identified intangible assets, Fair Value |
$ 30
|
|
| DCC Labs [Member] | Existing Technology [Member] |
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
| Identified intangible assets, Useful life |
3 years
|
|
| Identified intangible assets, Fair Value |
$ 490
|
|