Securities - Schedule of Available-for-Sales Securities Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Amortized Cost
Total	$ 875,799	$ 967,461
Mortgage-backed securities	812,252	864,330
Amortized Cost	1,688,051	1,831,791
Fair Value
Total	775,926	856,077
Mortgage-backed securities	692,077	738,890
Fair Value	1,468,003	1,594,967
Available-for-sale securities
Amortized Cost
Due in one year or less	47,677	50,922
Due after one year through five years	514,770	508,880
Due after five years through ten years	269,157	367,743
Due after ten years	44,195	39,916
Fair Value
Due in one year or less	46,893	50,269
Due after one year through five years	461,320	459,721
Due after five years through ten years	230,292	314,408
Due after ten years	$ 37,421	$ 31,679

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