Investment securities (Tables)

3 Months Ended

Mar. 31, 2026

Investment securities

Schedule of amortized cost and fair value of investment securities aggregated by investment category


		March 31, 2026
					Gross			Gross
		Amortized			Unrealized			Unrealized			Fair
(Dollars in thousands)		Cost			Gains			Losses			Value
Available for sale:
U.S. Treasury securities		$	19,136		$			$	1,116		$	18,020
State and municipals:
Taxable			65,273			18			7,077			58,214
Tax-exempt			149,342			173			10,347			139,168
Residential mortgage-backed securities:
U.S. government agencies			20,978						360			20,618
U.S. government-sponsored enterprises			159,987			431			15,075			145,343
Commercial mortgage-backed securities:
U.S. government-sponsored enterprises			1,708						19			1,689
Private collateralized mortgage obligations			48,230			594			361			48,463
Asset backed securities			15,647			22			303			15,366
Corporate debt securities			21,264			651			271			21,644
Negotiable certificates of deposit			733			3						736
Total available for sale		$	502,298		$	1,892		$	34,929		$	469,261
Held to maturity:
Tax-exempt state and municipals		$	10,803		$			$	700		$	10,103
Residential mortgage-backed securities:
U.S. government agencies			12,072						2,054			10,018
U.S. government-sponsored enterprises			47,682						6,849			40,833
Total held to maturity		$	70,557		$			$	9,603		$	60,954


		December 31, 2025
					Gross			Gross
		Amortized			Unrealized			Unrealized			Fair
(Dollars in thousands)		Cost			Gains			Losses			Value
Available for sale:
U.S. Treasury securities		$	32,125		$			$	1,127		$	30,998
State and municipals:
Taxable			68,618			22			7,018			61,622
Tax-exempt			132,586			429			7,898			125,117
Residential mortgage-backed securities:
U.S. government agencies			42,801			145			247			42,699
U.S. government-sponsored enterprises			174,223			962			15,105			160,080
Commercial mortgage-backed securities:
U.S. government-sponsored enterprises			1,789						19			1,770
Private collateralized mortgage obligations			48,007			766			289			48,484
Asset backed securities			16,544			23			300			16,267
Corporate debt securities			24,287			829			322			24,794
Negotiable certificates of deposit			727			5						732
Total available for sale		$	541,707		$	3,181		$	32,325		$	512,563
Held to maturity:
Tax-exempt state and municipals		$	10,812		$	4		$	620		$	10,196
Residential mortgage-backed securities:
U.S. government agencies			12,291						1,977			10,314
U.S. government-sponsored enterprises			48,944						6,656			42,288
Total held to maturity		$	72,047		$	4		$	9,253		$	62,798

Schedule of maturity distribution


		Amortized			Fair
(Dollars in thousands)		Cost			Value
Within one year		$	3,161		$	3,165
After one but within five years			60,820			58,203
After five but within ten years			67,828			60,877
After ten years			123,939			115,537
			255,748			237,782
Mortgage-backed and other amortizing securities			246,550			231,479
Total		$	502,298		$	469,261


		Amortized			Fair
(Dollars in thousands)		Cost			Value
After one but within five years		$	4,487		$	4,106
After five but within ten years			6,316			5,997
			10,803			10,103
Mortgage-backed securities			59,754			50,851
Total		$	70,557		$	60,954

Schedule of fair value and unrealized losses of investment securities in continuous unrealized loss position


		March 31, 2026
		Less than Twelve Months								Twelve Months or Longer								Total
		Total # in a loss					Unrealized			Total # in a loss					Unrealized			Total # in a loss					Unrealized
(Dollars in thousands)		Position			Fair Value		Losses			Position			Fair Value		Losses			Position			Fair Value		Losses
Securities available for sale
U.S. Treasury securities										5		$	18,020		$	1,116		5		$	18,020		$	1,116
State and municipals:
Taxable										62			56,721			7,077		62			56,721			7,077
Tax-exempt		73		$	63,456		$	2,090		82			58,395			8,257		155			121,851			10,347
Residential mortgage-backed securities:
U.S. government agencies		5			20,579			360										5			20,579			360
U.S. government-sponsored enterprises		8			17,634			169		29			66,318			14,906		37			83,952			15,075
Commercial mortgage-backed securities:
U.S. government-sponsored enterprises										1			1,689			19		1			1,689			19
Other		14			23,040			138		11			6,760			223		25			29,800			361
Asset-backed securities		3			4,776			22		2			1,822			281		5			6,598			303
Corporate debt securities		2			1,748			2		5			4,054			269		7			5,802			271
Total		105		$	131,233		$	2,781		197		$	213,779		$	32,148		302		$	345,012		$	34,929

Securities Held to Maturity
Tax-exempt state and municipals		6		$	4,012		$	38		10		$	6,091		$	662		16		$	10,103		$	700
Residential mortgage-backed securities:
U.S. government agencies										3			10,018			2,054		3			10,018			2,054
U.S. government-sponsored enterprises										8			40,833			6,849		8			40,833			6,849
Total		6		$	4,012		$	38		21		$	56,942		$	9,565		27		$	60,954		$	9,603


		December 31, 2025
		Less than Twelve Months								Twelve Months or Longer								Total
		Total # in a loss						Unrealized		Total # in a loss						Unrealized		Total # in a loss						Unrealized
(Dollars in thousands)		Position			Fair Value			Losses		Position			Fair Value			Losses		Position			Fair Value			Losses
Securities available for sale
U.S. Treasury securities										8		$	30,998		$	1,127		8		$	30,998		$	1,127
State and municipals:
Taxable										64			59,002			7,018		64			59,002			7,018
Tax-exempt		37		$	35,137		$	519		87			63,245			7,379		124			98,382			7,898
Residential mortgage-backed securities:
U.S. government agencies		6			28,689			247										6			28,689			247
U.S. government-sponsored enterprises		3			8,989			60		34			71,288			15,045		37			80,277			15,105
Commercial mortgage-backed securities:
U.S. government-sponsored enterprises										1			1,770			19		1			1,770			19
Other		8			14,534			96		11			8,000			193		19			22,534			289
Asset-backed securities		3			4,884			12		2			1,888			288		5			6,772			300
Corporate debt securities		2			1,491			9		8			7,451			313		10			8,942			322
Total		59		$	93,724		$	943		215		$	243,642		$	31,382		274		$	337,366		$	32,325


Securities held to maturity
Tax-exempt state and municipals										11		$	6,641		$	620		11		$	6,641		$	620
Residential mortgage-backed securities:
U.S. government agencies										3			10,314			1,977		3			10,314			1,977
U.S. government-sponsored enterprises										8			42,288			6,656		8			42,288			6,656
Total										22		$	59,243		$	9,253		22		$	59,243		$	9,253

Summary of unrealized and realized gains


			For the three months ended
			March 31,
(Dollars in thousands)			2026			2025
Net gains recognized on equity securities		$	456		$	71
Less: net gains realized on equity securities sold
Unrealized gains on equity securities		$	456		$	71