Investment Securities - Schedule of Amortized Cost and Fair Value of Available for sale Investment Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Investment Securities Available-for-sale Amortized cost
Due after one year through five years	$ 2,284
Due after five years through ten years	2,357
Due after ten years	3,989
Mortgage-backed securities and collateralized mortgage obligations	54,041
Available for sale, Amortized Cost	62,671	$ 63,814
Investment Securities Available-for-sale, Estimated Fair Value
Due after one year through five years	2,114
Due after five years through ten years	2,020
Due after ten years	3,158
Mortgage-backed securities and collateralized mortgage obligations	50,024
Total	$ 57,316	$ 57,842

Amortized cost 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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