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Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 31, 2015
Accounting Policies [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended |
|  | March 31, |
|  | 2015 |  |  | 2014 |
Numerator: |  |  |  |  |  |  |  |
Income (loss) from continuing operations |  | $ | 1,165 |  |  | $ | (4,050 | )
Loss from discontinued operations |  |  | (36 | ) |  |  | (20 | )
Net income (loss) |  | $ | 1,129 |  |  | $ | (4,070 | )
Denominator: |  |  |  |  |  |  |  |
Basic weighted average common shares outstanding |  |  | 9,671 |  |  |  | 5,172 |
Potential common shares from options and warrants |  |  | 322 |  |  |  | - |
Diluted weighted average shares |  |  | 9,993 |  |  |  | 5,172 |
Schedule of Product Warranty Liability [Table Text Block] |
|  | Three months ended |
|  | March 31, |
|  | 2015 |  |  | 2014 |
Balance at beginning of period |  | $ | 188 |  |  | $ | 75 |
Accruals for warranties issued |  |  | 352 |  |  |  | 16 |
Settlements made during the period (in cash or in kind) |  |  | (37 | ) |  |  | (16 | )
Accrued warranty reserve |  | $ | 503 |  |  | $ | 75 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=51674963&loc=d3e12565-110249 + Details
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