Investment Securities - Amortized Cost and Fair Value - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Securities Held-to-Maturity
Amortized cost	$ 98,507	$ 99,415
Gross unrealized (losses)	(16,541)	(18,254)
Securities held-to-maturity, fair value		81,161
Securities held-to-maturity, fair value.	81,966
U.S Treasuries
Securities Held-to-Maturity
Amortized cost	6,000	6,000
Gross unrealized (losses)	(722)	(840)
Securities held-to-maturity, fair value		5,160
Securities held-to-maturity, fair value.	5,278
U.S. government and federal agencies
Securities Held-to-Maturity
Amortized cost	35,519	35,551
Gross unrealized (losses)	(5,492)	(6,135)
Securities held-to-maturity, fair value		29,416
Securities held-to-maturity, fair value.	30,027
Collateralized mortgage obligations
Securities Held-to-Maturity
Amortized cost	20,850	21,275
Gross unrealized (losses)	(3,932)	(4,227)
Securities held-to-maturity, fair value		17,048
Securities held-to-maturity, fair value.	16,918
Taxable municipal
Securities Held-to-Maturity
Amortized cost	6,069	6,073
Gross unrealized (losses)	(1,161)	(1,364)
Securities held-to-maturity, fair value		4,709
Securities held-to-maturity, fair value.	4,908
Mortgage-backed
Securities Held-to-Maturity
Amortized cost	30,069	30,516
Gross unrealized (losses)	(5,234)	(5,688)
Securities held-to-maturity, fair value		$ 24,828
Securities held-to-maturity, fair value.	$ 24,835

Fair value of investment in debt security measured at amortized cost excluding accrued interest (held-to-maturity).

No definition available.

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- Definition

Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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