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Note 3 - Balance Sheet Components (Details) - Property and Equipment (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Property and Equipment [Abstract]
Computer equipment	$ 10,791	$ 10,319
Software	3,599	3,552
Furniture, fixtures and equipment	956	971
Leasehold improvements	1,038	1,021
Test equipment	3,694	2,005
Construction-in-progress	1,075	864
	21,153	18,732
Less: accumulated depreciation	(15,354)	(14,834)
Total	$ 5,799	$ 3,898

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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