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Share Repurchase Program (Details) - Common Stock [Member] - USD ($)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Aug. 31, 2018
Stock Repurchase Program [Abstract]
Stock repurchase program, approved amount	$ 37,000,000			$ 20,000,000
Repurchase of shares (in shares)	0	106,486	54,960
Repurchase of shares		$ 1,914,000	$ 1,139,000
Shares utilized, amount	$ 18,745,000
Shares available for repurchase, amount	$ 18,255,000
Shares repurchased and retired (in shares)	837,007

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Number of cumulative shares that have been repurchased and retired.

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The cumulative equity impact of the value of stock that has been repurchased and retired since the inception of the repurchase program. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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