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Note 11 - Line of Credit and Long-Term Debt (Details) (USD $)
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Liquidity Not Met In 2014 [Member]
Credit Facility [Member]
Dec. 31, 2013
Additional Increase By Quarter After 2015 [Member]
Credit Facility [Member]
Dec. 31, 2013
Secured Debt [Member]
Dec. 31, 2013
Credit Facility [Member]
Sep. 30, 2013
Credit Facility [Member]
Dec. 31, 2012
Credit Facility [Member]
Dec. 31, 2013
Letter of Credit [Member]
Dec. 31, 2012
Letter of Credit [Member]
Dec. 31, 2013
Minimum [Member]
Notes Payable, Other Payables [Member]
Dec. 31, 2013
Maximum [Member]
Notes Payable, Other Payables [Member]
Note 11 - Line of Credit and Long-Term Debt (Details) [Line Items]                        
Debt Instrument, Increase (Decrease) in Basis Spread on Variable Rate     2.00% 1.00%   0.50% 1.00%          
Line of Credit Facility, Interest Rate at Period End 4.75%           4.25%          
Line of Credit Facility, Maximum Borrowing Capacity $ 40,000,000 $ 50,000,000                    
Proceeds from Issuance of Debt               50,000,000        
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.75%                      
Line of Credit Facility, Increase (Decrease) in Basis Spread on Unused Capacity 0.25%                      
Line of Credit Facility, Amount Outstanding 7,800,000 24,000,000             2,000,000 1,800,000    
Line of Credit Facility, Remaining Borrowing Capacity 30,200,000 24,200,000                    
Debt Instrument, Face Amount         1,100,000              
Debt Instrument, Interest Rate at Period End         3.50%              
Debt Instrument, Term         15 years           3 years 5 years
Secured Long-term Debt, Noncurrent $ 189,000 $ 262,000     $ 189,000