Commitments and contigencies (Tables)

12 Months Ended

Oct. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of minimum rental income to be received from non-cancelable operating leases

Year Ending October 31,	Amount
2013	$	16,715
2014		15,313
2015		13,857
2016		12,395
2017		9,386
Thereafter		38,397
Total	$	106,063