v3.25.4
Marketable securities (Tables)
12 Months Ended
Dec. 31, 2025
Marketable securities  
Schedule of Marketable Securities

Cost or

amortized

Unrealized

Market value

cost

loss, net

(In millions)

December 31, 2024:

 

  ​

 

  ​

 

  ​

Current assets

$

1.9

$

1.9

$

Noncurrent assets

$

5.7

$

5.7

$

December 31, 2025:

 

  ​

 

  ​

 

  ​

Current assets

$

2.9

$

2.9

$

Noncurrent assets

$

6.1

$

5.9

$

.2

Schedule of Marketable Securities and Fair Value Measurements

Fair Value Measurements

Quoted

Significant

Prices in

Other

Active

Observable

Markets

Inputs

  ​ ​ ​

Total

  ​ ​ ​

(Level 1)

  ​ ​ ​

(Level 2)

(In millions)

December 31, 2024:

 

  ​

 

  ​

 

  ​

Current assets - fixed income securities

$

1.9

$

$

1.9

Noncurrent assets:

 

Fixed income securities

$

3.1

$

$

3.1

Mutual funds

2.6

2.6

 

Total

$

5.7

$

2.6

$

3.1

December 31, 2025:

 

  ​

 

  ​

 

  ​

Current assets - fixed income securities

$

2.9

$

$

2.9

Noncurrent assets:

Fixed income securities

$

3.2

$

$

3.2

Mutual funds

2.9

2.9

 

Total

$

6.1

$

2.9

$

3.2