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Note 3 - Cash, Cash Equivalents and Investments (Detail) - CD Maturity Dates (USD $)	Mar. 31, 2013	Sep. 30, 2012
Less than one year	$ 8,443,000	$ 9,107,000
1-3 years	4,261,000	4,572,000
Total	$ 12,704,000	$ 13,679,000

Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year through the fifth fiscal year following the latest fiscal year.

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- Definition

Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year following the latest fiscal year.

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