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Goodwill and Intangible Assets - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill impairment loss	$ 0		$ 0
Amortization expense	$ 263,000	$ 205,000	526,000	$ 490,000
Acquired water and mineral rights
Acquired Indefinite-lived Intangible Assets [Line Items]
Acquired water rights			$ 186,000

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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