INVESTMENT SECURITIES - Available for sale (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
INVESTMENT SECURITIES
Amortized Cost	$ 278,632	$ 216,514
Gross Unrealized Gains	2,172	2,301
Gross Unrealized Losses	(2,580)	(2,511)
Estimated Fair Value	278,224	216,304
Municipal securities
INVESTMENT SECURITIES
Amortized Cost	44,244	23,883
Gross Unrealized Gains	282	238
Gross Unrealized Losses	(606)	(555)
Estimated Fair Value	43,920	23,566
Agency securities
INVESTMENT SECURITIES
Amortized Cost	47,073	25,996
Gross Unrealized Gains	24	5
Gross Unrealized Losses	(409)	(686)
Estimated Fair Value	46,688	25,315
Real estate mortgage investment conduits
INVESTMENT SECURITIES
Amortized Cost	53,646	55,826
Gross Unrealized Gains	276	469
Gross Unrealized Losses	(588)	(480)
Estimated Fair Value	53,334	55,815
Residential mortgage-backed securities
INVESTMENT SECURITIES
Amortized Cost	92,512	71,787
Gross Unrealized Gains	958	1,075
Gross Unrealized Losses	(671)	(614)
Estimated Fair Value	92,799	72,248
Other mortgage-backed securities
INVESTMENT SECURITIES
Amortized Cost	41,157	39,022
Gross Unrealized Gains	632	514
Gross Unrealized Losses	(306)	(176)
Estimated Fair Value	$ 41,483	$ 39,360

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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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-Section 50
-Paragraph 2
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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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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).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount excluding accrued interest, 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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-Publisher FASB
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