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Note 6 - Accrued Liabilities and Other Liabilities - Noncurrent (Details) - Short-term and Long-term Warranty Reserves (USD $)	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012
Short-term and Long-term Warranty Reserves [Abstract]
Short-term warranty reserve	$ 291,798		$ 189,277
Long-term warranty reserve	27,873		23,482
	$ 319,671	$ 260,208	$ 212,759	$ 191,894	$ 205,005	$ 204,313

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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