Income Taxes Activities and balances of unrecognized tax benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 2,186	$ 540	$ 561
Additions based on tax positions related to the current year	0	747	88
Additions for tax positions of prior years	537	1,079	9
Reductions for tax positions of prior years	(33)	(68)	0
Reductions as result of lapse of applicable statute of limitations	0	(112)	(118)
Balance at end of year	$ 2,690	2,186	540
Other Information Pertaining to Income Taxes	8076
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 2,621	2,110
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	(107)	(125)	$ (102)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 643	$ 536