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Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual)
 3 Months Ended 12 Months Ended 15 Months Ended
Jun. 30, 2016
USD ($)
$ / shares
Jun. 30, 2015
USD ($)
$ / shares
Mar. 31, 2016
Jun. 30, 2016
Scenario, Previously Reported [Member]        
Income Tax Expense (Benefit)   $ 1,220,000    
Net Income (Loss) Available to Common Stockholders, Basic   $ 2,306,000    
Earnings Per Share, Basic | $ / shares   $ 0.65    
Earnings Per Share, Diluted | $ / shares   $ 0.63    
Comprehensive Income (Loss), Net of Tax, Attributable to Parent   $ 2,334,000    
Increase (Decrease) in Accrued Liabilities   (222,000)    
Number of Operating Segments     4 4
Number of Physical Locations in Which Entity is Organized 8      
Income Tax Expense (Benefit) $ 239,000 771,000    
Net Income (Loss) Available to Common Stockholders, Basic $ 1,930,000 $ 2,755,000    
Earnings Per Share, Basic | $ / shares $ 0.53 $ 0.77    
Earnings Per Share, Diluted | $ / shares $ 0.51 $ 0.74    
Comprehensive Income (Loss), Net of Tax, Attributable to Parent $ 1,980,000 $ 2,783,000    
Increase (Decrease) in Accrued Liabilities $ (3,584,000) $ (671,000)