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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2026
Fair Value Measurements  
Schedule of financial assets and liabilities measured at fair value

Estimated Fair Value June 30, 2026

Total

Input Levels Used

Fair Value

Level 1

Level 2

Level 3

Cash and cash equivalents

  ​ ​

$

62,080

  ​ ​ ​

$

62,080

  ​ ​ ​

$

  ​ ​ ​

$

Available for sale securities

380,105

11,423

368,682

Foreign currency derivatives

(231)

(231)

Commodity derivatives

(312)

(312)

Trading securities

130,723

114,489

16,234

Total assets measured at fair value

$

572,365

$

187,680

$

384,685

$

Estimated Fair Value December 31, 2025

Total

Input Levels Used

Fair Value

Level 1

Level 2

Level 3

Cash and cash equivalents

  ​ ​

$

127,165

  ​ ​ ​

$

127,165

  ​ ​ ​

$

  ​ ​ ​

$

Available for sale securities

365,041

 

2,961

 

362,080

Foreign currency derivatives

92

 

 

92

Commodity derivatives

(1,748)

 

(1,748)

 

Trading securities

121,541

 

104,642

 

16,899

Total assets measured at fair value

$

612,091

$

233,020

$

379,071

$

Estimated Fair Value June 30, 2025

Total

Input Levels Used

Fair Value

Level 1

Level 2

Level 3

Cash and cash equivalents

  ​ ​

$

120,521

  ​ ​ ​

$

120,521

  ​ ​ ​

$

  ​ ​ ​

$

Available for sale securities

271,627

4,143

267,484

Foreign currency derivatives

239

239

Commodity derivatives

(630)

(630)

Trading securities

112,009

95,499

16,510

Total assets measured at fair value

$

503,766

$

219,533

$

284,233

$