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Employee Benefit Plans (Table Text Block)

12 Months Ended

Mar. 31, 2025

Table Text Block [Abstract]

Summary Of Financing Arrangements for Leveraged ESOP Debt

		Years Ended March 31,
		2025				2024
		(In thousands)
Allocated shares - Voting Common Stock			733				777
Allocated shares - Non-Voting Common Stock			7,845				7,778

Shares Held by the ESOP Plan

The components of net periodic post retirement benefit cost were as follows:

		Years Ended March 31,
		2025				2024				2023
		(In thousands)
Service cost for benefits earned during the period		$	982		$		1,188		$		1,326
Other components of net periodic benefit costs:
Interest cost on accumulated postretirement benefit			1,499				1,469				1,148
Other components			(11	)			(11	)			68
Total other components of net periodic benefit costs			1,488				1,458				1,216
Net periodic postretirement benefit cost		$	2,470		$		2,646		$		2,542

Components of Net Periodic Post Retirement Benefit Cost

		Years Ended March 31,
		2025				2024
		(In thousands)
Beginning of year	$		28,326		$		28,770
Service cost for benefits earned during the period			982				1,188
Interest cost on accumulated post retirement benefit			1,499				1,469
Net benefit payments and expense			(1,327	)			(1,240	)
Actuarial gain			(496	)			(1,861	)
Prior service credit			(1,579	)			—
Accumulated postretirement benefit obligation			27,405				28,326
Current liabilities			1,790				1,741
Non-current liabilities			25,614				26,585
Total post retirement benefit liability recognized in statement of financial position			27,404				28,326
Components included in accumulated other comprehensive income (loss):
Unrecognized net loss			3,449				1,385
Cumulative net periodic benefit cost (in excess of employer contribution)	$		30,853		$		29,711

Components of Post Retirement Benefit Liabilities

		Years Ended March 31,
		2025				2024				2023
		(In percentages)
Accumulated postretirement benefit obligation			5.45		%		5.34		%		5.08		%

Discount Rate Assumptions for Accumulated Postretirement Benefit Obligations

		Future Net Benefit Payments
		(In thousands)
Year-ended:
2026	$		1,789
2027			2,010
2028			2,211
2029			2,387
2030			2,596
2031 Through 2035			13,158
Total	$		24,151

X

- Definition

Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate.

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-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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Tabular disclosure of the change in the accumulated postemployment benefit obligation from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits.

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Tabular disclosure of the details pertaining to each employee stock ownership plan.

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Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

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Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

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