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Investment Securities - Amortized cost and estimated fair value (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Amortized Cost
Due within one year or less	$ 3,016
Due after one year through five years	35,948
Due after five years through ten years	78,983
Due after 10 years	156,649
Total investment securities available-for-sale	274,596
Fair Value
Due within one year or less	3,026
Due after one year through five years	35,989
Due after five years through ten years	80,405
Due after 10 years	159,296
Total investment securities available-for-sale	$ 278,716

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth fiscal year through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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