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Note 2 - Acquisitions Dispositions (Tables) (BGI [Member])
6 Months Ended
Sep. 30, 2014
BGI [Member]
 
Note 2 - Acquisitions Dispositions (Tables) [Line Items]  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Inventories, net

  $ 1,268  

Property, plant and equipment, net

    47  

Intangibles, net

    5,711  

Goodwill

    3,295  

Accrued expenses

    (53 )

Total purchase price allocation

  $ 10,268  
Business Acquisition, Pro Forma Information [Table Text Block]
   

Three Months Ended

September 30,

   

Six Months Ended

September 30,

 
   

2014

   

2013

   

2014

   

2013

 

Revenues

  $ 18,540     $ 14,592     $ 35,258     $ 27,726  

Net income

    3,060       2,467       5,019       4,863  

Net Income per common share:

                               

Basic

  $ 0.87     $ 0.72     $ 1.43     $ 1.43  

Diluted

    0.84       0.69       1.38       1.36