Securities (Tables)

3 Months Ended

Mar. 31, 2023

Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation

	March 31, 2023
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
Available-for-sale:	Cost		Gains		Losses		Value
U.S. Treasury	$	241,002	$	—	$	(14,496)	$	226,506
U.S. Government-sponsored enterprises (GSEs)		63,723		1,783		(28)		65,478
Municipal securities		19,022		94		(412)		18,704
Other debt securities		32,952		—		(2,396)		30,556
Mortgage-backed securities (GSEs)		240,767		34		(21,627)		219,174
Total	$	597,466	$	1,911	$	(38,959)	$	560,418

	December 31, 2022
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
Available-for-sale:	Cost		Gains		Losses		Value
U.S. Treasury	$	241,506	$	—	$	(17,853)	$	223,653
U.S. Government-sponsored enterprises (GSEs)		1,593		—		(18)		1,575
Municipal securities		19,210		17		(616)		18,611
Other debt securities		32,959		—		(2,408)		30,551
Mortgage-backed securities (GSEs)		233,948		6		(24,451)		209,503
Total	$	529,216	$	23	$	(45,346)	$	483,893

	December 31, 2022
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
Held-to-maturity:	Cost		Gains		Losses		Value
U.S. Treasury	$	150,295	$	—	$	(5,613)	$	144,682
U.S. Government-sponsored enterprises (GSEs)		50,539		—		(8,037)		42,502
Municipal securities		53,694		—		(7,550)		46,144
Mortgage-backed securities (GSEs)		31,421		—		(4,136)		27,285
Total	$	285,949	$	—	$	(25,336)	$	260,613

Schedule of Held-to-maturity Securities Reconciliation

Investments Classified by Contractual Maturity Date

The amortized cost and estimated fair value of securities at March 31, 2023 by contractual maturity for non-mortgage backed securities are shown below (in thousands). Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	March 31, 2023
	Amortized		Fair
Available-for-sale:	Cost		Value
Due in one year or less	$	110,981	$	108,256
Due from one year to five years		111,416		103,219
Due from five years to ten years		123,988		119,631
Due after ten years		10,314		10,138
		356,699		341,244
Mortgage-backed securities		240,767		219,174
Total	$	597,466	$	560,418
Held-to-maturity:
Due in one year or less	$	99,946	$	97,148
Due from one year to five years		50,297		48,916
Due from five years to ten years		37,828		33,309
Due after ten years		65,867		56,747
		253,938		236,120
Mortgage-backed securities		30,838		27,052
Total	$	284,776	$	263,172

Schedule of Unrealized Loss on Investments

The following tables present the gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities AFS and HTM have been in a continuous unrealized loss position (in thousands):

	March 31, 2023
	Less than 12 Months					12 Months or Greater					Total
			Gross		Number			Gross		Number			Gross		Number
	Fair		Unrealized		of	Fair		Unrealized		of	Fair		Unrealized		of
Available-for-sale:	Value		Losses		Securities	Value		Losses		Securities	Value		Losses		Securities
U.S. Treasury	$	3,955	$	(34)	1	$	222,553	$	(14,462)	19	$	226,508	$	(14,496)	20
U.S. Government-sponsored enterprises (GSEs)		8,225		(24)	3		286		(4)	2		8,511		(28)	5
Municipal securities		5,455		(96)	6		8,086		(316)	15		13,541		(412)	21
Other debt securities		13,895		(989)	9		16,660		(1,407)	17		30,555		(2,396)	26
Mortgage-backed securities (GSEs)		51,558		(1,086)	44		164,308		(20,541)	71		215,866		(21,627)	115
Total	$	83,088	$	(2,229)	63	$	411,893	$	(36,730)	124	$	494,981	$	(38,959)	187
	March 31, 2023
	Less than 12 Months					12 Months or Greater					Total
			Gross		Number			Gross		Number			Gross		Number
	Fair		Unrealized		of	Fair		Unrealized		of	Fair		Unrealized		of
Held-to-maturity:	Value		Losses		Securities	Value		Losses		Securities	Value		Losses		Securities
U.S. Treasury	$	—	$	—	—	$	146,064	$	(4,178)	4	$	146,064	$	(4,178)	4
U.S. Government-sponsored enterprises (GSEs)		—		—	—		43,257		(6,983)	13		43,257		(6,983)	13
Municipal securities		250		(20)	1		46,549		(6,637)	34		46,799		(6,657)	35
Mortgage-backed securities (GSEs)		—		—	—		27,052		(3,786)	5		27,052		(3,786)	5
Total	$	250	$	(20)	1	$	262,922	$	(21,584)	56	$	263,172	$	(21,604)	57

	December 31, 2022
	Less than 12 Months					12 Months or Greater					Total
			Gross		Number			Gross		Number			Gross		Number
	Fair		Unrealized		of	Fair		Unrealized		of	Fair		Unrealized		of
Available-for-sale:	Value		Losses		Securities	Value		Losses		Securities	Value		Losses		Securities
U.S. Treasury	$	134,414	$	(7,610)	9	$	89,239	$	(10,243)	11	$	223,653	$	(17,853)	20
U.S. Government-sponsored enterprises (GSEs)		1,266		(14)	1		309		(4)	2		1,575		(18)	3
Municipal securities		13,146		(616)	20		—		—	—		13,146		(616)	20
Other debt securities		25,044		(1,866)	20		5,506		(542)	6		30,550		(2,408)	26
Mortgage-backed securities (GSEs)		111,598		(8,968)	86		96,285		(15,483)	28		207,883		(24,451)	114
Total	$	285,468	$	(19,074)	136	$	191,339	$	(26,272)	47	$	476,807	$	(45,346)	183
	December 31, 2022
	Less than 12 Months					12 Months or Greater					Total
			Gross		Number			Gross		Number			Gross		Number
	Fair		Unrealized		of	Fair		Unrealized		of	Fair		Unrealized		of
Held-to-maturity:	Value		Losses		Securities	Value		Losses		Securities	Value		Losses		Securities
U.S. Treasury	$	144,683	$	(5,613)	4	$	—	$	—	—	$	144,683	$	(5,613)	4
U.S. Government-sponsored enterprises (GSEs)	$	13,048	$	(2,503)	3	$	29,451	$	(5,534)	10	$	42,499	$	(8,037)	13
Municipal securities		40,770		(6,387)	28		5,375		(1,163)	7		46,145		(7,550)	35
Mortgage-backed securities (GSEs)		—		—	—		27,285		(4,136)	5		27,285		(4,136)	5
Total	$	198,501	$	(14,503)	35	$	62,111	$	(10,833)	22	$	260,612	$	(25,336)	57

Schedule of Other Investments

The following is the amortized cost and carrying value of other investments (in thousands):

	March 31,		December 31,
	2023		2022
Federal Reserve Bank stock	$	9,792	$	9,783
Federal Home Loan Bank stock		3,917		5,397
First National Bankers Bank stock		350		350
Total	$	14,059	$	15,530