Components of Net Periodic Benefit Cost (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Oct. 31, 2020
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 675,000	$ 841,000
Expected return on plan assets	(831,000)	(835,000)
Defined Benefit Plan, Amortization of Gain (Loss)	(374,000)	(287,000)
Net periodic (benefit) cost	218,000	293,000
Pension Contributions	219,000
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	2,000	3,000
Expected return on plan assets	0	0
Defined Benefit Plan, Amortization of Gain (Loss)	(2,000)	(1,000)
Net periodic (benefit) cost	$ 4,000	$ 4,000
Scenario, Forecast [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension Contributions			$ 897,000