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Note 6 - Segment Information (Tables)
3 Months Ended
Jun. 30, 2014
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Chemical

   

Electronics

   

Total

 

Three months ended June 30, 2014

                       

Revenue from external customers

  $ 297,158     $ 326,516     $ 623,674  

Segment operating income (loss)

  $ 77,032     $ (41,298 )   $ 35,734  
                         

Three months ended June 30, 2013

                       

Revenue from external customers

  $ 249,780     $ 72,659     $ 322,439  

Segment operating income (loss)

  $ 70,571     $ (137,371 )   $ (66,800 )
                         
                         

Total assets at June 30, 2014

  $ 488,768     $ 546,573     $ 1,035,341  
                         

Total assets at March 31, 2014

  $ 613,406     $ 216,822     $ 830,228