Investment Securities (Tables)

9 Months Ended

Sep. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Summary of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Value of Investment Securities Available for Sale

The amortized cost, gross unrealized gains and losses, and fair value of investment securities available for sale are summarized as follows:

	September 30, 2021
(In Thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available for Sale:
U.S. government agency securities	$	6,254	$	72	$	—		$	6,326
Small Business Administration loan pools		6,460		133		(39	)		6,554
Obligations of state and political subdivisions		47,653		2,316		(51	)		49,918
Mortgage-backed securities in government-sponsored entities		59,461		651		(162	)		59,950
Total available-for-sale securities	$	119,828	$	3,172	$	(252	)	$	122,748
	December 31, 2020
(In Thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available for Sale:
Small Business Administration loan pools	$	7,835	$	198	$	(39	)	$	7,994
Obligations of state and political subdivisions		49,167		2,895		(3	)		52,059
Mortgage-backed securities in government-sponsored entities		64,406		1,068		(80	)		65,394
Total available-for-sale securities	$	121,408	$	4,161	$	(122	)	$	125,447

Summary of Gross Unrealized Losses and Fair Value

The following tables show the Company's gross unrealized losses and fair value, aggregated by investment category and length of time the individual debt securities have been in a continuous unrealized loss position.

	September 30, 2021
	Less Than Twelve Months					Twelve Months or Greater					Total
(In Thousands)	Fair Value		Gross Unrealized Loss			Fair Value		Gross Unrealized Loss			Fair Value		Gross Unrealized Loss
Available for Sale:
Small Business Administration loan pools	$	1,761	$	(25	)	$	1,258	$	(14	)	$	3,019	$	(39	)
Obligations of state and political subdivisions		3,644		(51	)		—		—			3,644		(51	)
Mortgage-backed securities in government-sponsored entities		21,060		(162	)		—		—			21,060		(162	)
Total available-for-sale securities	$	26,465	$	(238	)	$	1,258	$	(14	)	$	27,723	$	(252	)
	December 31, 2020
	Less Than Twelve Months					Twelve Months or Greater					Total
(In Thousands)	Fair Value		Gross Unrealized Loss			Fair Value		Gross Unrealized Loss			Fair Value		Gross Unrealized Loss
Available for Sale:
Small Business Administration loan pools	$	2,059	$	(9	)	$	1,539	$	(30	)	$	3,598	$	(39	)
Obligations of state and political subdivisions		557		(3	)		—		—			557		(3	)
Mortgage-backed securities in government-sponsored entities		12,245		(80	)		—		—			12,245		(80	)
Total available-for-sale securities	$	14,861	$	(92	)	$	1,539	$	(30	)	$	16,400	$	(122	)

Summary of Amortized Cost and Fair Value by Contractual Maturity

Amortized cost and fair value by contractual maturity, where applicable, are shown below. Actual maturities may differ from contractual maturities because the borrower may have the right to prepay obligations with or without penalty.

	September 30, 2021
(In Thousands)	Amortized Cost		Fair Value
Available for Sale:
Due within one year	$	3,275	$	3,280
Due after one year through five years		60,013		60,751
Due after five years through ten years		23,607		24,126
Due after ten years		32,933		34,591
	$	119,828	$	122,748

Summary of Sales of Debt Securities

The following table summarizes sales of debt securities:

	Nine Months Ended
	September 30,		September 30,
	2021		2020
Proceeds	$	—	$	5,706
Gross gains	$	—	$	221
Gross losses		—		(111	)
Net gain	$	—	$	110