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FAIR VALUE MEASUREMENTS (Tables)
12 Months Ended
Dec. 31, 2020
FAIR VALUE MEASUREMENTS  
Schedule of financial assets and liabilities measured at fair value

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Estimated Fair Value December 31, 2020

 

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Total

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Input Levels Used

 

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Fair Value

    

Level 1

    

Level 2

    

    Level 3    

 

Cash and equivalents

​

$

166,841

​

$

166,841

​

$

—

​

$

—

​

Available for sale securities

​

 

188,282

​

 

3,149

​

 

185,133

​

 

—

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Foreign currency forward contracts

​

 

778

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—

​

 

778

​

 

—

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Commodity futures contracts, net

​

 

941

​

 

941

​

 

—

​

 

—

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Trading securities

​

 

73,828

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61,431

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12,397

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—

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Total assets measured at fair value

​

$

430,670

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$

232,362

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$

198,308

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$

—

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Estimated Fair Value December 31, 2019

 

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Total

​

Input Levels Used

 

​

    

Fair Value

    

Level 1

    

Level 2

    

    Level 3    

 

Cash and equivalents

​

$

138,960

​

$

138,960

​

$

—

​

$

—

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Available for sale securities

​

 

177,292

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3,588

​

 

173,704

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—

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Foreign currency forward contracts

​

 

14

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—

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14

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—

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Commodity futures contracts, net

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121

​

 

121

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—

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—

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Trading securities

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76,183

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48,260

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27,923

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—

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Total assets measured at fair value

​

$

392,570

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$

190,929

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$

201,641

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$

—

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Summary of the aggregate fair value, gross unrealized gains, gross unrealized losses, realized losses and amortized cost basis of investment portfolio by major security type

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December 31, 2020

 

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Amortized

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Fair

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Unrealized

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Realized

 

Available for Sale:

    

Cost

    

Value

    

Gains

    

Losses

    

Losses

 

Municipal bonds

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$

556

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$

561

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$

5

​

$

—

​

$

—

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Variable rate demand notes

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​

1,300

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​

1,300

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​

—

​

​

—

​

​

—

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Corporate bonds

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174,835

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177,229

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2,394

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—

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—

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Government securities

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3,049

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3,149

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​

100

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—

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​

—

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Certificates of deposit

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​

5,915

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​

6,043

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​

128

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—

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—

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$

185,655

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$

188,282

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$

2,627

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$

—

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$

—

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December 31, 2019

 

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Amortized

​

Fair

​

Unrealized

​

Realized

 

Available for Sale:

    

Cost

    

Value

    

Gains

    

Losses

    

Losses

 

Municipal bonds

​

$

—

​

$

—

​

$

—

​

$

—

​

$

—

​

Variable rate demand notes

​

​

25,845

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​

25,845

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​

—

​

​

—

​

​

—

​

Corporate bonds

​

 

139,803

​

 

140,797

​

 

994

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—

​

 

—

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Government securities

​

 

3,503

​

 

3,588

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​

85

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—

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​

—

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Certificates of deposit

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6,978

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​

7,062

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​

84

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​

—

​

​

—

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​

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$

176,129

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$

177,292

​

$

1,163

​

$

—

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$

—

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