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Note 1 - Organization and Summary of Significant Accounting Policies (Tables)
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12 Months Ended |
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Dec. 31, 2014
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| Accounting Policies [Abstract] |
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| Schedule of Estimated Useful Lives of Long Lived Assets [Table Text Block] |
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Asset Category
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Years
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Office equipment
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3 years
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Software
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3 years
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Leasehold improvements
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Shorter of lease term or estimated useful life
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Production equipment
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2 years
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Computer equipment
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5 years
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Lab equipment
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5 years
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Furniture and fixtures
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7 years
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| Schedule of Product Warranty Liability [Table Text Block] |
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Year Ended December 31,
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2014
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2013
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2012
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Beginning balance
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$
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40
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$
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40
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$
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40
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Warranty liabilities assumed in acquisition
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79
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—
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—
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Settlements
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(9
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)
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—
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—
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$
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110
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$
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40
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$
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40
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