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Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) (USD $)
 7 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Oct. 30, 2013
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Oct. 02, 2012
Mar. 31, 2014
Building [Member]
Maximum [Member]
Mar. 31, 2014
Equipment [Member]
Maximum [Member]
Mar. 31, 2014
Computer Equipment [Member]
Maximum [Member]
Mar. 31, 2013
Reclassified from Retained Earnings to Common Stock [Member]
Mar. 31, 2011
Reclassified from Retained Earnings to Common Stock [Member]
Mar. 31, 2014
Common Stock [Member]
Mar. 31, 2013
Common Stock [Member]
Mar. 31, 2012
Common Stock [Member]
Mar. 31, 2013
Reclassified from Other Revenues to Product Revenues [Member]
Mar. 31, 2012
Reclassified from Other Revenues to Product Revenues [Member]
Mar. 31, 2013
Reclassified from Other Revenues to Service Revenues [Member]
Mar. 31, 2012
Reclassified from Other Revenues to Service Revenues [Member]
Mar. 31, 2014
Geographic Concentration Risk [Member]
UNITED STATES
Sales Revenue, Goods, Net [Member]
Mar. 31, 2014
Geographic Concentration Risk [Member]
Other Countries [Member]
Sales Revenue, Goods, Net [Member]
Mar. 31, 2014
Sales Revenue, Goods, Net [Member]
Mar. 31, 2013
Sales Revenue, Goods, Net [Member]
Mar. 31, 2012
Sales Revenue, Goods, Net [Member]
Mar. 31, 2014
Accounts Receivable [Member]
Mar. 31, 2014
Trade Names [Member]
Mar. 31, 2013
Trade Names [Member]
Mar. 31, 2014
Maximum [Member]
Intangible Assets Excluding Trade Names [Member]
Mar. 31, 2014
Maximum [Member]
Trade Names [Member]
Mar. 31, 2014
Minimum [Member]
Intangible Assets Excluding Trade Names [Member]
Mar. 31, 2014
Minimum [Member]
Trade Names [Member]
Note 1 - Description of Business and Summary of Significant Accounting Policies (Details) [Line Items]                                                          
Number of Reportable Segments 2 3                                                      
Number of Physical Locations in which Entity is Organized   7                                                      
Common Stock Shares Authorized Prior to Amendment         8,000,000                                                
Common Stock, Shares Authorized   25,000,000 25,000,000                                                    
Prior Period Reclassification Adjustment                           $ 5,239,000 $ 4,805,000 $ 5,845,000 $ 4,415,000                        
Cumulative Prior Period Reclassification Adjustment                 629,000 272,000                                      
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options   $ 1,906,000 $ 295,000 $ 62,000             $ 1,906,000 $ 295,000 $ 62,000                                
Number of Major Customers                                       0 0 0 0            
Concentration Risk, Percentage                                   56.00% 44.00%                    
Property, Plant and Equipment, Useful Life           40 years 7 years 3 years                                          
Finite-Lived Intangible Asset, Useful Life                                               10 years 10 years 16 years 10 years 3 years 3 years