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Note 6 - Long-term Debt (Details) (USD $)
 1 Months Ended 14 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended
Mar. 31, 2014
Apr. 30, 2014
Subsequent Event [Member]
London Interbank Offered Rate (LIBOR) [Member]
Term Loan [Member]
Apr. 30, 2014
Subsequent Event [Member]
Term Loan [Member]
May 30, 2014
Subsequent Event [Member]
Apr. 30, 2014
Subsequent Event [Member]
Mar. 31, 2014
Debt Instrument Variable Rate Base CBFR Using One Month LIBOR [Member]
Line of Credit [Member]
Feb. 29, 2012
Line of Credit [Member]
Mar. 31, 2014
Line of Credit [Member]
Mar. 31, 2014
Revolving Credit Facility [Member]
Mar. 31, 2014
Letter of Credit [Member]
Mar. 31, 2014
Minimum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit [Member]
Mar. 31, 2014
Minimum [Member]
Debt Instrument Variable Rate Base CBFR Using One Month LIBOR [Member]
Line of Credit [Member]
Mar. 31, 2014
Minimum [Member]
Line of Credit [Member]
Mar. 31, 2014
Maximum [Member]
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit [Member]
Mar. 31, 2014
Maximum [Member]
Debt Instrument Variable Rate Base CBFR Using One Month LIBOR [Member]
Line of Credit [Member]
Mar. 31, 2014
Maximum [Member]
Line of Credit [Member]
Note 6 - Long-term Debt (Details) [Line Items]                                
Debt Instrument, Term             3 years                  
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)                 $ 20,000,000 $ 1,000,000            
Long-term Debt, Gross (in Dollars)     15,000,000                          
Line of Credit Facility, Amount Outstanding (in Dollars) 16,500,000                              
Debt Instrument, Basis Spread on Variable Rate   2.00%                 1.25% 0.50%   2.00% 1.25%  
Debt Instrument Basis Spread on Variable Rate Used to Calculate Commercial Bank Floating Rate           2.50%                    
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage                         0.15%     0.30%
Line of Credit Facility Unused Capacity Fee Ratio of Funded Debt to EBITDA Low End of Range                               1
Line of Credit Facility, Unused Capacity Fee Ratio of Funded Debt to EBITDA High End of Range                         2      
Line of Credit Facility, Periodic Payment, Number of Quarterly Payments         11                      
Line of Credit Facility, Periodic Payment, Principal (in Dollars)     750,000                          
Debt Instrument Covenant Ratio of Funded Debt to Consolidated EBIDTA               2.5                
Debt Instrument Covenant Fixed Charge Coverage Ratio                         1.35      
Repayments of Lines of Credit (in Dollars)       $ 4,500,000