Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Fair Value Measurements
Cash and cash equivalents	$ 120,521	$ 138,841	$ 45,623
Fair value measured on a recurring basis
Fair Value Measurements
Cash and cash equivalents	120,521	138,841	45,623
Available for sale securities	271,627	283,060	279,543
Trading securities	112,009	105,067	98,728
Total assets measured at fair value	503,766	523,984	422,364
Fair value measured on a recurring basis \| Foreign currency derivatives
Fair Value Measurements
Derivative instruments, net	239	(818)	(43)
Fair value measured on a recurring basis \| Commodity derivatives
Fair Value Measurements
Derivative instruments, net	(630)	(2,166)	(1,487)
Fair value measured on a recurring basis \| Level 1
Fair Value Measurements
Cash and cash equivalents	120,521	138,841	45,623
Available for sale securities	4,143	4,102	4,049
Trading securities	95,499	86,925	81,058
Total assets measured at fair value	219,533	227,702	129,243
Fair value measured on a recurring basis \| Level 1 \| Commodity derivatives
Fair Value Measurements
Derivative instruments, net	(630)	(2,166)	(1,487)
Fair value measured on a recurring basis \| Level 2
Fair Value Measurements
Available for sale securities	267,484	278,958	275,494
Trading securities	16,510	18,142	17,670
Total assets measured at fair value	284,233	296,282	293,121
Fair value measured on a recurring basis \| Level 2 \| Foreign currency derivatives
Fair Value Measurements
Derivative instruments, net	$ 239	$ (818)	$ (43)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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