Employee Retirement Plans - AOCL Related Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Amounts recognized in accumulated other comprehensive loss
Net actuarial loss	$ 4,861	$ 561
Accumulated other comprehensive loss	4,861	561
Amounts included in accumulated other comprehensive loss, expected to be recognized as components of net periodic benefit cost
Net actuarial gain	(139)
Total net periodic benefit income	(139)
Amounts recognized in net periodic benefit cost and other comprehensive loss
Net actuarial loss (gain)	(984)	(1,022)
Amortization of unrecognized actuarial gain	5,284	(13)
Total recognized in other comprehensive income	4,300	(1,035)
Total recognized in net periodic benefit cost (income) and other comprehensive loss (income)	(2,257)	(1,216)
Defined Benefit Pension Plans
Amounts recognized in accumulated other comprehensive loss
Net actuarial loss	4,861	4,632
Accumulated other comprehensive loss	4,861	4,632
Amounts included in accumulated other comprehensive loss, expected to be recognized as components of net periodic benefit cost
Net actuarial gain	(139)
Total net periodic benefit income	(139)
Amounts recognized in net periodic benefit cost and other comprehensive loss
Net actuarial loss (gain)	154	(277)
Amortization of unrecognized actuarial gain	71	(300)
Total recognized in other comprehensive income	225	(577)
Total recognized in net periodic benefit cost (income) and other comprehensive loss (income)	396	106
Post-Retirement Benefit Plan
Amounts recognized in accumulated other comprehensive loss
Net actuarial loss	0	(4,071)
Accumulated other comprehensive loss	0	(4,071)
Amounts included in accumulated other comprehensive loss, expected to be recognized as components of net periodic benefit cost
Net actuarial gain	0
Total net periodic benefit income	0
Amounts recognized in net periodic benefit cost and other comprehensive loss
Net actuarial loss (gain)	(1,138)	(745)
Amortization of unrecognized actuarial gain	5,213	287
Total recognized in other comprehensive income	4,075	(458)
Total recognized in net periodic benefit cost (income) and other comprehensive loss (income)	$ (2,653)	$ (1,322)