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Retirement Plans - Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Retirement Benefits [Abstract]
Administrative expenses	$ 70	$ 47
Interest cost	160	207
Expected return on plan assets	(248)	(272)
Prior service cost	11	11
Recognized actuarial loss	185	101
Net periodic benefit cost	$ 178	$ 94

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Amount of administration expense of defined benefit plan which decreases plan assets. Excludes plan administration expense paid by employer.

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