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Minimum lease payments under these non-cancelable operating leases (Detail) (USD $)	Oct. 31, 2012
Minimum Lease Payments Under These Non Cancelable Operating Leases [Line Items]
2013	$ 638,000
2014	381,000
2015	196,000
2016	116,000
2017	2,000
Total	$ 1,333,000

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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