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Securities (Tables)
6 Months Ended
Jun. 30, 2026
Securities  
Schedule of amortized cost and fair values of securities, with gross unrealized gains and losses

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Amortized

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Unrealized

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Unrealized

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Allowance for

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Fair

(In thousands)

  ​ ​ ​

Cost

  ​ ​ ​

Gains

  ​ ​ ​

Losses

  ​ ​ ​

Credit Losses

  ​ ​ ​

Value

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​

Available-for-sale securities:

 

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  ​

June 30, 2026:

 

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  ​

 

​

  ​

 

​

  ​

 

​

  ​

 

​

  ​

U.S. Treasury securities

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$

6,006

​

$

—

​

$

(46)

​

$

—

​

$

5,960

U.S. Government Agency securities

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1,000

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—

​

 

(107)

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—

​

 

893

Municipal securities

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16,335

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—

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(2,381)

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(666)

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13,288

Mortgage-backed securities and collateralized mortgage obligations

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10,263

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—

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(990)

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—

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9,273

Corporate securities

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5,763

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9

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(70)

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—

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5,702

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$

39,367

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$

9

​

$

(3,594)

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$

(666)

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$

35,116

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​

​

​

​

​

​

December 31, 2025:

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  ​

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  ​

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  ​

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  ​

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  ​

U.S. Treasury securities

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$

14,775

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$

36

​

$

(16)

​

$

—

​

$

14,795

U.S. Government Agency securities

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1,000

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—

​

 

(100)

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—

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900

Municipal securities

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16,406

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3

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(2,364)

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(518)

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13,527

Mortgage-backed securities and collateralized mortgage obligations

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11,796

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10

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(891)

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—

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10,915

Corporate securities

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8,608

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12

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(122)

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—

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8,498

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$

52,585

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$

61

​

$

(3,493)

​

$

(518)

​

$

48,635

Schedule of amortized cost and fair value of debt securities based on the contractual maturity

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  ​ ​ ​

June 30, 2026

  ​ ​ ​

December 31, 2025

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Amortized

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Fair

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Amortized

​

Fair

(In thousands)

  ​ ​ ​

Cost

  ​ ​ ​

Value

  ​ ​ ​

Cost

  ​ ​ ​

Value

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Due in one year or less

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$

4,767

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$

4,098

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$

14,434

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$

13,868

Due after one year through five years

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12,899

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12,076

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13,866

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13,185

Due after five years through ten years

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8,469

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7,350

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9,056

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7,986

Due after ten years

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2,969

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2,319

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3,433

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2,681

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​

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​

​

​

​

​

​

​

​

Mortgage-backed securities and collateralized mortgage obligations

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10,263

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9,273

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11,796

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10,915

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$

39,367

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$

35,116

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$

52,585

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$

48,635

Schedule of securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position

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  ​ ​ ​

Less than Twelve Months

  ​ ​ ​

Twelve Months and Greater

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Gross

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Gross

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Unrealized

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Fair

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Unrealized

​

Fair

(In thousands)

  ​ ​ ​

Losses

  ​ ​ ​

Value

  ​ ​ ​

Losses

  ​ ​ ​

Value

​

​

​

June 30, 2026:

 

​

  ​

 

​

  ​

 

​

  ​

 

​

  ​

U.S. Treasury securities

​

$

(46)

​

$

5,960

​

$

—

​

​

—

U.S. Government Agency securities

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—

​

 

—

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(107)

​

 

893

Municipal securities

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(5)

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1,133

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(2,376)

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11,214

Mortgage-backed securities and collateralized mortgage obligations

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(83)

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4,895

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(907)

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4,378

Corporate securities

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—

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—

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(70)

​

 

2,745

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​

$

(134)

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$

11,988

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$

(3,460)

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$

19,230

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​

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​

​

​

​

​

​

​

​

​

​

December 31, 2025:

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  ​

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  ​

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  ​

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  ​

U.S. Treasury securities

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$

(1)

​

$

996

​

$

(15)

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$

2,984

U.S. Government Agency securities

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—

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—

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(100)

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900

Municipal securities

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(1)

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1,025

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(2,363)

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11,300

Mortgage-backed securities and collateralized mortgage obligations

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(32)

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3,871

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(859)

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5,359

Corporate securities

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—

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—

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(122)

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5,718

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​

$

(34)

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$

5,892

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$

(3,459)

​

$

26,261

Schedule of allowance for credit losses on available-for-sale debt securities

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(In thousands)

  ​ ​ ​

Municipal Securities

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June 30, 2026:

 

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  ​

Balance, beginning of period

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$

518

Provision for credit losses, not previously recorded

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148

Balance, end of period

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$

666

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​

​

​

June 30, 2025:

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  ​

Balance, beginning of period

​

$

498

Provision for credit losses, not previously recorded

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—

Balance, end of period

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$

498