Debt Securities Held-to-Maturity (Tables)

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Securities Held-to-Maturity

The following is a summary of mortgage-backed securities held-to-maturity at September 30, 2023 and December 31, 2022 (in thousands): 

	September 30, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	10,114	$	—	$	(743)	$	9,371
Total securities held-to-maturity	$	10,114	$	—	$	(743)	$	9,371

	December 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	10,760	$	90	$	(461)	$	10,389
Total securities held-to-maturity	$	10,760	$	90	$	(461)	$	10,389

Gross Unrealized Losses on Mortgage-Backed Securities

Gross unrealized losses on mortgage-backed securities held-to-maturity, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2023 and December 31, 2022 were as follows (in thousands):

	September 30, 2023
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	(210)	$	5,948	$	(533)	$	3,423	$	(743)	$	9,371
Total	$	(210)	$	5,948	$	(533)	$	3,423	$	(743)	$	9,371

	December 31, 2022
	Less than 12 months				12 months or more				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
	losses		fair value		losses		fair value		losses		fair value
Mortgage-backed securities:
Pass-through certificates:
GSE	$	(461)	$	7,433	$	—	$	—	$	(461)	$	7,433
Total	$	(461)	$	7,433	$	—	$	—	$	(461)	$	7,433