Income Taxes Statutory federal income tax rate (Details)	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	34.90%	34.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	3.00%	4.10%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance	0.40%	(0.40%)
Effective Income Tax Rate Reconciliation, Tax Contingencies	0.30%	(0.10%)
Effective Income Tax Rate Reconciliation, Deductions, Qualified Production Activities	(2.70%)	(2.40%)
Effective Income Tax Rate Reconciliation, Tax Credits, Foreign	1.60%	2.20%
Effective Income Tax Rate Reconciliation, Stock Option Expense	0.80%	1.40%
Effective Income Tax Rate Reconciliation, Adjustment of Uncertain Tax Positions	1.00%	2.10%
Effective Income Tax Rate Reconciliations, Adjustments of Previous Tax Filings	0.50%	(0.10%)
Effective Income Tax Rate Reconciliation, Other Adjustments	0.10%	(0.80%)
Effective Income Tax Rate, Continuing Operations	39.90%	40.00%