Securities - Available-for-sale by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost
Due in one year or less	$ 1,280
Due from one year to five years	88,430
Due from five years to ten years	87,487
Due after ten years	12,989
Securities available for sale, amortized cost	190,186
Mortgage-backed securities	319,389
Total, post ASU 2019-04	509,575	$ 441,057
Fair Value
Due in one year or less	1,274
Due from one year to five years	79,446
Due from five years to ten years	84,734
Due after ten years	12,727
Securities available for sale, fair value	178,181
Mortgage-backed securities	296,166
Total, post ASU 2019-04	$ 474,347	$ 408,410

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://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3