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Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details) - Warranty Activity (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Warranty Activity [Abstract] |  |
Balance at the beginning of the period | $ 75 | $ 159
Accruals for warranties issued | 16 | 16
Settlements made during the period (in cash or in kind) | (16) | (35)
Balance at the end of the period | $ 75 | $ 140

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- Details
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- Definition Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid within one year or the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Represents the aggregate decrease in the liability for payments made (in cash or in kind) to satisfy claims under the terms of the standard product warranty. Does not include any Increase or Decrease in the liability for payments related to extended product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(2)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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- Definition Represents the aggregate increase in the liability for accruals related to standard product warranties issued during the reporting period. Does not include any increase in the liability for accruals related to extended product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(3)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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