Restricted Cash

6 Months Ended

Apr. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Restricted cash

As of April 30, 2013 and October 31, 2012, we have pledged $15.6 million and $10.6 million, respectively, of our cash and cash equivalents as collateral and letters of credit for certain banking requirements and contracts. As of April 30, 2013, outstanding letters of credit totaled $13.1 million compared to $9.6 million at October 31, 2012. These expire on various dates through April 2019.