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INVESTMENT SECURITIES - Held to maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022
INVESTMENT SECURITIES
Amortized Cost	$ 256,002	$ 253,100
Gross Unrealized Losses	(26,413)	(17,071)
Estimated Fair Value	229,589	236,029
Municipal securities
INVESTMENT SECURITIES
Amortized Cost	10,362	10,368
Gross Unrealized Losses	(2,522)	(1,422)
Estimated Fair Value	7,840	8,946
Agency securities
INVESTMENT SECURITIES
Amortized Cost	53,807	45,277
Gross Unrealized Losses	(3,552)	(2,450)
Estimated Fair Value	50,255	42,827
Real estate mortgage investment conduits
INVESTMENT SECURITIES
Amortized Cost	37,980	39,394
Gross Unrealized Losses	(3,482)	(2,457)
Estimated Fair Value	34,498	36,937
Residential mortgage-backed securities
INVESTMENT SECURITIES
Amortized Cost	133,158	137,343
Gross Unrealized Losses	(14,165)	(8,883)
Estimated Fair Value	118,993	128,460
Other mortgage-backed securities
INVESTMENT SECURITIES
Amortized Cost	20,695	20,718
Gross Unrealized Losses	(2,692)	(1,859)
Estimated Fair Value	$ 18,003	$ 18,859

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- Definition

Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

+ References

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-Publisher FASB
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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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