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Stockholder's Equity - Narrative (Details) - USD ($)	1 Months Ended			3 Months Ended	12 Months Ended
	Apr. 30, 2024	Mar. 31, 2024	Feb. 29, 2024	Apr. 30, 2024	Apr. 30, 2024	Aug. 31, 2023	Apr. 30, 2023
Equity [Abstract]
Common stock, shares authorized (in shares)	5,000,000			5,000,000	5,000,000		5,000,000
Common stock, par value (in USD per share)	$ 2.50			$ 2.50	$ 2.50		$ 2.50
Common stock, shares outstanding (in shares)	2,839,000			2,839,000	2,839,000		2,830,000
Number of Shares authorized to be repurchased (in shares)						100,000
Treasury stock (in shares)	17,045	12,758	6,932	36,735	66,191
Treasury stock, value					$ 1,992,000
Number of shares authorized to be repurchased	33,809	50,854	63,612	33,809	33,809

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- Definition

Treasury Stock, Value Excluding Broker Commissions and Fees, Acquired, Cost Method

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Number of shares that have been repurchased during the period and are being held in treasury.

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