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Note 5 - Debt (Details) (USD $)
 1 Months Ended 12 Months Ended
May 24, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Note 5 - Debt (Details) [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) $ 7,500,000      
Potential Credit Facility Increase (in Dollars) 35,000,000      
Line Of Credit, Maximum Borrowing Capacity, Percentage Of Eligible Accounts Receivable 85.00%      
Line Of Credit, Maximum Borrowing Capacity, Percentage Of Eligible Accounts Line Of Credit, Maximum Borrowing Capacity, Percentage Of Book Value Of Eligible Inventory 65.00%      
Line Of Credit, Maximum Borrowing Capacity, Percentage Of Appraised Net Orderly Liquidation Value Of Eligible Inventory 85.00%      
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.375%    
Line of Credit Facility, Amount Outstanding (in Dollars)   0    
Line of Credit Facility, Interest Rate at Period End   2.17%    
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)   12,969,000    
Cash and Cash Equivalents, at Carrying Value (in Dollars)   16,066,000 9,656,000 5,320,000
Numerator [Member] | Minimum [Member]
        
Note 5 - Debt (Details) [Line Items]        
Fixed Charge Coverage Ratio   1    
Denominator [Member] | Minimum [Member]
        
Note 5 - Debt (Details) [Line Items]        
Fixed Charge Coverage Ratio   15    
PNC [Member]
        
Note 5 - Debt (Details) [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) 20,000,000      
Letter of Credit [Member]
        
Note 5 - Debt (Details) [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) $ 1,000,000      
Maximum [Member]
        
Note 5 - Debt (Details) [Line Items]        
Fixed Charge Coverage Ratio   1