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Acquisition - Additional Information (Detail) (Miltope's Ruggedized Printer Product Line Operation [Member], USD $) | 9 Months Ended |
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Nov. 01, 2014 | Jan. 22, 2014
Miltope's Ruggedized Printer Product Line Operation [Member] |  |
Business Acquisition [Line Items] |  |
Completion date of acquisition | Jan. 22, 2014 |
Purchase price of the acquisition |  | $ 6,732,000
Amount held in escrow related to business acquisition |  | $ 500,000
Duration of escrow deposits | 12 months |

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