|**Note 8 - Business Combinations (Tables)**                                                  | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                             
|-------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Business Combinations [Abstract]**                                                         |                                                                                                                                                                                                                                                                                                                                                                            
|Revenue Recognition, Milestone Method [Table Text Block]                                     | Revenue milestones
        
        Additional shares$15.5 million in 2013
        
        
        2,772,598$16.0 million in 2014
        
        
        1,584,342$16.5 million in 2015
        
        
        1,742,776Total
        
        
        6,099,716Or, alternatively, if $33.0 million for 2013 and 2014 combined
        
        
        6,099,716
|Revenue milestones                                                                           |                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                             |                                                                                                                                                                                                                                                                                                                                                                            
|$15.5 million in 2013                                                                        |                                                                                                                                                                                                                                                                                                                                                                            
|$16.0 million in 2014                                                                        |                                                                                                                                                                                                                                                                                                                                                                            
|$16.5 million in 2015                                                                        |                                                                                                                                                                                                                                                                                                                                                                            
|Total                                                                                        |                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                             |                                                                                                                                                                                                                                                                                                                                                                            
|Or, alternatively, if $33.0 million for 2013 and 2014 combined                               |                                                                                                                                                                                                                                                                                                                                                                            
|Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] | Net fair value of assets acquired
        
        $
        107Intangible assets, net of tax
        
        
        9,930Goodwill
        
        
        16,32126,358Deferred tax liability
        
        
        (1,766
        )$
        24,592                                                                                                              
|Net fair value of assets acquired                                                            |                                                                                                                                                                                                                                                                                                                                                                            
|Intangible assets, net of tax                                                                |                                                                                                                                                                                                                                                                                                                                                                            
|Goodwill                                                                                     |                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                             |                                                                                                                                                                                                                                                                                                                                                                            
|Deferred tax liability                                                                       |                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                             |                                                                                                                                                                                                                                                                                                                                                                            
|Schedule Of Intangible Assets [Table Text Block]                                             | Definite-lived intangibles:Customer relationships
        
        $
        6,400Proprietary technology
        
        
        800Other intangibles
        
        
        830Indefinite-lived intangibles:Tradename
        
        
        1,900$
        9,930                                                                                                 
|Definite-lived intangibles:                                                                  |                                                                                                                                                                                                                                                                                                                                                                            
|Customer relationships                                                                       |                                                                                                                                                                                                                                                                                                                                                                            
|Proprietary technology                                                                       |                                                                                                                                                                                                                                                                                                                                                                            
|Other intangibles                                                                            |                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                             |                                                                                                                                                                                                                                                                                                                                                                            
|Indefinite-lived intangibles:                                                                |                                                                                                                                                                                                                                                                                                                                                                            
|Tradename                                                                                    |                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                             |                                                                                                                                                                                                                                                                                                                                                                            

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