Comprehensive Income (Tables)
 12 Months Ended
Oct. 31, 2012
Comprehensive Income Loss Disclosure Table [Abstract]  
Components of accumulated other comprehensive income (loss)
 (in thousands) 2012 2011
 Unamortized loss on derivative instrument, net of tax$ (1,424)$ (1,714)
 Net unrealized gains on available-for-sale securities, net of tax  5,461 3,386
 Foreign currency translation adjustments, net of tax  (114) (332)
 Total accumulated other comprehensive income$3,923$1,340