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Note 1 - Summary of Operations and Significant Accounting Policies (Details) (USD $)
 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Large Defense Primary Contractor [Member]
Sales Revenue, Goods, Net [Member]
Dec. 31, 2012
Large Defense Primary Contractor [Member]
Sales Revenue, Goods, Net [Member]
Dec. 31, 2013
Customer A [Member]
Accounts Receivable [Member]
Dec. 31, 2012
Customer A [Member]
Accounts Receivable [Member]
Dec. 31, 2013
Customer B [Member]
Accounts Receivable [Member]
Dec. 31, 2012
Customer B [Member]
Accounts Receivable [Member]
Dec. 31, 2013
Stock Options, Warrants And Restricted Stock Awards [Member]
Dec. 31, 2012
Stock Options, Warrants And Restricted Stock Awards [Member]
Dec. 31, 2013
Buildings [Member]
Minimum [Member]
Dec. 31, 2013
Buildings [Member]
Maximum [Member]
Dec. 31, 2013
Machinery and Equipment [Member]
Minimum [Member]
Dec. 31, 2013
Machinery and Equipment [Member]
Maximum [Member]
Dec. 31, 2013
Furniture and Fixtures [Member]
Minimum [Member]
Dec. 31, 2013
Furniture and Fixtures [Member]
Maximum [Member]
Dec. 31, 2013
Computer Hardware And Software [Member]
Minimum [Member]
Dec. 31, 2013
Computer Hardware And Software [Member]
Maximum [Member]
Jun. 30, 2013
Research and Development Expense [Member]
Dec. 31, 2013
Sales Revenue, Goods, Net [Member]
Dec. 31, 2013
Accounts Receivable [Member]
Note 1 - Summary of Operations and Significant Accounting Policies (Details) [Line Items]                                          
Property, Plant and Equipment, Useful Life                     10 years 20 years 5 years 10 years 3 years 10 years 3 years 5 years      
Impairment of Long-Lived Assets Held-for-use $ 0 $ 0                                      
Goodwill and Intangible Asset Impairment 0 0                                      
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 309,000                                        
Finite-Lived Intangible Assets, Amortization Expense, Year Two 229,000                                        
Finite-Lived Intangible Assets, Amortization Expense, Year Three 167,000                                        
Finite-Lived Intangible Assets, Amortization Expense, Year Four 122,000                                        
Finite-Lived Intangible Assets, Amortization Expense, Year Five 86,000                                        
Foreign Currency Transaction Gain (Loss), Realized (15,000) (43,000)                                      
Advertising Expense 413,000 538,000                                      
Recoveries of Construction Costs 0 91,000                                      
Recoveries of Project Research and Development Costs 0 11,000                                      
Gain (Loss) on Disposition of Assets                                     56,000    
Asset Impairment Charges $ 0                                        
Number Of Major Customers   2                                   1 2
Concentration Risk, Percentage     25.00% 21.00% 26.00% 22.00% 15.00% 12.00%                          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)                 2,251,622 2,211,488                      
Number of Operating Segments 2