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INVESTMENT SECURITIES - Contractual maturities, Held t o maturity (Details) $ in Thousands	Mar. 31, 2021 USD ($)
Held to Maturity, Amortized Cost
Due after one year through five years	$ 18
Due after five years through ten years	8,595
Due after ten years	30,961
Total, Amortized Cost	39,574
Held to Maturity, Estimated Fair Value
Due after one year through five years	18
Due after five years through ten years	8,193
Due after ten years	30,009
Total, Estimated Fair Value	$ 38,220

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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