Amount of available-for-sale debt securities at fair value maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year.

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Amount of available-for-sale debt securities at fair value maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year.

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Amount of available-for-sale debt securities at fair value maturing in the next fiscal year following the latest fiscal year.

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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale which are intended to be held for less than one year or the normal operating cycle, whichever is longer.

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Marketable Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Jul. 31, 2012
Summary of available-for-sale securities
Within one year	$ 10,830
After one year through five years
After five years through ten years
After ten years
Fair Value	$ 10,830