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Investment Securities - Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Trading securities - at fair value:
Total trading securities	$ 76,108	$ 42,267
Held-to-maturity securities - at amortized cost:
Total held-to-maturity securities	15,420	15,214
Short-term Investments	91,528	57,481
Recurring
Trading securities - at fair value:
Total trading securities	76,108	42,267
Level 1 | Recurring
Trading securities - at fair value:
Total trading securities	76,093	42,256
Level 2 | Recurring
Trading securities - at fair value:
Total trading securities	15	11
Money Market Funds [Member]
Trading securities - at fair value:
Total trading securities	0	110
Money Market Funds [Member] | Recurring
Trading securities - at fair value:
Total trading securities		110
Money Market Funds [Member] | Level 1 | Recurring
Trading securities - at fair value:
Total trading securities		110
Money Market Funds [Member] | Level 2 | Recurring
Trading securities - at fair value:
Total trading securities	0	0
Mutual funds
Trading securities - at fair value:
Total trading securities	33,559	13,627
Mutual funds | Level 1 | Recurring
Trading securities - at fair value:
Total trading securities	33,559
Equity securities
Trading securities - at fair value:
Total trading securities	2,505	8
Equity securities | Recurring
Trading securities - at fair value:
Total trading securities	2,505	8
Equity securities | Level 1 | Recurring
Trading securities - at fair value:
Total trading securities	2,505	8
Equity securities | Level 2 | Recurring
Trading securities - at fair value:
Total trading securities		0
US Treasury Securities [Member]
Trading securities - at fair value:
Total trading securities	40,029	28,511
US Treasury Securities [Member] | Recurring
Trading securities - at fair value:
Total trading securities	40,029	28,511
US Treasury Securities [Member] | Level 1 | Recurring
Trading securities - at fair value:
Total trading securities	40,029	28,511
US Treasury Securities [Member] | Level 2 | Recurring
Trading securities - at fair value:
Total trading securities	0	0
U.S. government notes
Held-to-maturity securities - at amortized cost:
Total held-to-maturity securities	15,420	15,214
Debt Securities [Member] | Recurring
Trading securities - at fair value:
Total trading securities	15	11
Debt Securities [Member] | Level 1 | Recurring
Trading securities - at fair value:
Total trading securities		0
Debt Securities [Member] | Level 2 | Recurring
Trading securities - at fair value:
Total trading securities	$ 15	$ 11

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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