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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2020
Fair Value Measurements  
Schedule of financial assets and liabilities measured at fair value

Estimated Fair Value March 31, 2020

Total

Input Levels Used

Fair Value

Level 1

Level 2

Level 3

Cash and cash equivalents

   

$

139,067

    

$

139,067

    

$

-

    

$

-

Available for sale securities

162,080

3,441

158,639

-

Foreign currency forward contracts

(93)

-

(93)

-

Commodity futures contracts

(480)

(480)

-

-

Trading securities

68,717

41,692

27,025

-

Total assets measured at fair value

$

369,291

$

183,720

$

185,571

$

-

Estimated Fair Value December 31, 2019

Total

Input Levels Used

Fair Value

Level 1

Level 2

Level 3

Cash and cash equivalents

   

$

138,960

    

$

138,960

    

$

-

    

$

-

Available for sale securities

177,292

3,588

173,704

-

Foreign currency forward contracts

14

-

14

-

Commodity futures contracts, net

121

121

-

-

Trading securities

76,183

48,260

27,923

-

Total assets measured at fair value

$

392,570

$

190,929

$

201,641

$

-

Estimated Fair Value March 31, 2019

Total

Input Levels Used

Fair Value

Level 1

Level 2

Level 3

Cash and cash equivalents

   

$

77,670

    

$

77,670

    

$

-

    

$

-

Available for sale securities

199,944

3,041

196,903

-

Foreign currency forward contracts

(197)

-

(197)

-

Commodity futures contracts

(151)

(151)

-

-

Trading securities

69,260

42,866

26,394

-

Total assets measured at fair value

$

346,526

$

123,426

$

223,100

$

-