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R&D Expense	12 Months Ended
R&D Expense	Dec. 31, 2016
Research And Development Expense [Abstract]
R&D Expense	NOTE 2—R&D EXPENSE From 2010 through 2014, the Company had an in-house design team in China to develop certain of its products, including its ruggedized line of xTreme products. However, in 2014, the design team was phased out and shut down after all of its internal development projects were completed. R&D expense in 2014 was $588,000 and there were no R&D expenses during 2015 or 2016.

The entire disclosure for research, development, and computer software activities, including contracts and arrangements to be performed for others and with federal government. Includes costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility and in-process research and development acquired in a business combination consummated during the period.

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