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Note 6 - Accrued Liabilities And Other Liabilities - Noncurrent (Details) - Short-term and Long-term Warranty Reserves (USD $)
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Short-term and Long-term Warranty Reserves [Abstract]        
Short-term warranty reserve $ 195,057 $ 189,277    
Long-term warranty reserve 20,701 23,482    
$ 215,758 $ 212,759 $ 190,593 $ 204,313