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Note 6 - Loan Payable (Detail) (USD $)
 0 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended
Dec. 15, 2011
Aug. 11, 2011
Aug. 31, 2011
Mar. 31, 2012
Jun. 30, 2012
Jul. 28, 2011
Jun. 30, 2012
Stock Repurchase [Member]
Jun. 30, 2011
Bank of Montreal (“BMO”) U.S. Base Rate Plus Percent [Member]
Jun. 30, 2011
LIBOR Plus Percent [Member]
Jun. 30, 2012
Foreign Exchange Risk [Member]
Jun. 30, 2011
Foreign Exchange Risk [Member]
Jun. 30, 2012
Operating Demand Loan [Member]
Jun. 30, 2011
Operating Demand Loan [Member]
Jun. 30, 2012
DLR Loan [Member]
Mar. 31, 2012
DLR Loan [Member]
Jun. 30, 2012
Revolving Demand Loan Facilities [Member]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) $ 4,000,000                 $ 3,500,000     $ 1,000,000 $ 8,000,000   $ 8,000,000
Line of Credit Facility Share Repurchase Limit                               2,000,000
Debt Instrument, Basis Spread on Variable Rate               1.25% 2.50%       1.25% 1.25%    
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage             0.20%                  
Line of Credit Facility Maturity         4 years                      
Line of Credit Facility, Current Borrowing Capacity           2,500,000                    
Line of Credit Facility, Decrease, Repayments   1,000,000                            
Line of Credit Facility, Increase, Additional Borrowings     2,500,000 4,000,000                        
Stock Repurchased During Period, Shares (in Shares)       7,570,236                        
Share Price (in Dollars per share)       $ 0.77                        
Stock Repurchased and Retired During Period, Value (in Dollars) 5,829,082     5,829,082                        
Stock Repurchased And Retired During Period Transaction Cost       64,000                        
Line of Credit Facility, Amount Outstanding                             4,000,000  
Line of Credit Facility, Covenant Period                   18 months            
Derivative Asset, Fair Value, Gross Asset                     20,200,000          
Line of Credit Facility, Monitoring Fee                       500        
Line of Credit Facility, Covenant Terms         The Amended Credit Facility also requires that the Company comply with certain customary non-financial covenants and restrictions. In addition, the Company has agreed to comply with the following financial covenants at all times: (i) Maximum Senior Funded Debt to EBITDA of 2.00:1; (ii) Maximum Total Funded Debt to EBITDA of 2.50:1; and (iii) Minimum Fixed Charge Coverage of 1.25:1. Further, the Maximum Annual Capital Expenditures cannot exceed $3.6 million per year, which limit will be reviewed on an annual basis. As of, and for the period ended, June30,2012, the Company was in compliance with these covenants                      
Line of Credit Facility Maximum Annual Capital Expenditure Ceiling         $ 3,600,000