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INVESTMENT SECURITIES - Additional information (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
INVESTMENT SECURITIES
Proceeds from the sale of investment securities	$ 0	$ 0
Gross realized gains on sales of investment securities	0	$ 0
Available for sale with amortized cost	219,429		$ 235,591
Available for sale, estimated fair value	196,461		211,499
Held to maturity, estimated fair value	200,475		210,214
Asset Pledged as Collateral.
INVESTMENT SECURITIES
Available for sale with amortized cost	2,800		3,200
Available for sale, estimated fair value	2,500		2,900
Held to maturity at amortized cost	11,400		12,300
Held to maturity, estimated fair value	$ 9,600		$ 10,400

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- Definition

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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