| **Note 7 - Income Taxes (Tables)**                                        | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
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| **Income Tax Disclosure [Abstract]**                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Schedule of Deferred Tax Assets and Liabilities [Table Text Block]        | ** **** **
**March 31,**
** **** **
**December 31,**
** **** **** **
**2014******
** **** **
**2013******
** **
Deferred tax assets:
                                                                                                                                                        
Net operating loss carryforwards
                             $                  12,210                                                        $                  12,074                           
Inventory
                                                1,855                                                                           1,856                           
Other liabilities
                                                2,967                                                                           3,051                           
Fixed assets
                                                2,007                                                                           2,069                           
Other temporary differences
                                                716                                                                           751                                                                                              19,755                                                                           19,801                           
Less: valuation allowance
                                                (19,678                  )                                                        (19,745                  )        
Total deferred tax assets
                                                77                                                                           56                                                                                                                                                                                                      
Deferred tax liability:
                                                                                                                                                        
Intangibles
                                                (1,385                  )                                                        (1,453                  )        
Other temporary differences
                                                163                                                                           (13                  )        
Net deferred tax liability
                             $                  (1,145                  )                                     $                  (1,410                  )                                                                                                                                                                                   
As reported:
                                                                                                                                                        
Non-current deferred tax assets
                             $                  77                                                        $                  56                           
Current deferred tax liability
                             $                  (260                  )                                     $                  (271                  )        
Non-current deferred tax liability
                             $                  (962                  )                                     $                  (1,195                  ) |
| Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] | ** **** **
**Three Months**
** **** **** **
**Ended March 31,**
** **** **** **
**2014**
** **** **
**2013**
** **
Current:
                                                                                                                                                        
State and foreign
                             $                  (176                  )                                     $                  (11                  )                                                                                                                                                                                   
Deferred:
                                                                                                                                                        
State
                                                (4                  )                                                        10                           
Federal
                                                (75                  )                                                        343                           
Foreign
                                                276                                                                           -                                                                                              197                                                                           353                                                                                                                                                                                                      
Change in valuation allowance
                                                67                                                                           (353                  )                                                                                                                                                                                   
Income tax benefit (expense)
                             $                  88                                                        $                  (11                  )                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |

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| - Definition
Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319
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| - Definition
Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319
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