Investment Securities - Securities by contractual maturity (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Available for sale, Amortized Cost
Due after one year through five years	$ 73
Due after five years through ten years	37,765
Due after ten years	90,022
Amortized Cost	127,860
Available for sale, Fair Value
Due after one year through five years	72
Due after five years through ten years	38,589
Due after ten years	88,346
Fair Value	127,007
Held to maturity, Amortized Cost
Due after ten years	38,127
Amortized Cost	38,127
Held to maturity, Fair Value
Due after ten years	37,669
Fair Value	$ 37,669

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 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).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563