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Note 6 - Accrued Liabilities And Other Liabilities - Noncurrent (Details) - Changes in Warranty Reserve (USD $)
3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Changes in Warranty Reserve [Abstract]    
Beginning balance $ 212,759 $ 204,313
Warranty provision 14,361 (9,445)
Warranty settlements (11,362) (4,275)
Ending balance $ 215,758 $ 190,593