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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair value measurements |  |
Cash and cash equivalents | $ 53,270 | $ 105,840
Available for sale securities | 272,448 | 241,407
Trading securities | 71,208 | 89,736
Fair value measured on a recurring basis |  |
Fair value measurements |  |
Cash and cash equivalents | 53,270 | 105,840
Available for sale securities | 272,448 | 241,407
Trading securities | 71,208 | 89,736
Total assets measured at fair value | 396,654 | 437,533
Fair value measured on a recurring basis | Foreign currency derivatives. |  |
Fair value measurements |  |
Derivative instruments, net | (282) | 426
Fair value measured on a recurring basis | Commodity derivatives |  |
Fair value measurements |  |
Derivative instruments, net | 10 | 124
Fair value measured on a recurring basis | Level 1 |  |
Fair value measurements |  |
Cash and cash equivalents | 53,270 | 105,840
Available for sale securities | 1,889 | 1,282
Trading securities | 56,049 | 76,196
Total assets measured at fair value | 111,218 | 183,442
Fair value measured on a recurring basis | Level 1 | Commodity derivatives |  |
Fair value measurements |  |
Derivative instruments, net | 10 | 124
Fair value measured on a recurring basis | Level 2 |  |
Fair value measurements |  |
Available for sale securities | 270,559 | 240,125
Trading securities | 15,159 | 13,540
Total assets measured at fair value | 285,436 | 254,091
Fair value measured on a recurring basis | Level 2 | Foreign currency derivatives. |  |
Fair value measurements |  |
Derivative instruments, net | $ (282) | $ 426

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