Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Investment securities
Acquisition Cost	$ 50,311	$ 66,282
Accretion / (Amortization)	205	809
Unrealized Gain / (Loss)	6	7
Estimated Fair Value	50,522	67,098
Accrued interest receivable	314	504
Commercial paper
Investment securities
Acquisition Cost	4,888	10,130
Accretion / (Amortization)	34	254
Unrealized Gain / (Loss)		3
Estimated Fair Value	4,922	10,387
Corporate notes / bonds
Investment securities
Acquisition Cost	24,063	45,336
Accretion / (Amortization)	96	483
Unrealized Gain / (Loss)	2	7
Estimated Fair Value	24,161	45,826
Money market funds
Investment securities
Acquisition Cost	5,287	2,766
Estimated Fair Value	5,287	2,766
U.S. govt. agencies
Investment securities
Acquisition Cost	11,192	1,441
Accretion / (Amortization)	64	31
Unrealized Gain / (Loss)	5	(2)
Estimated Fair Value	11,261	1,470
U.S. treasuries
Investment securities
Acquisition Cost	4,881	6,609
Accretion / (Amortization)	11	41
Unrealized Gain / (Loss)	(1)	(1)
Estimated Fair Value	$ 4,891	$ 6,649

Amount, before tax, of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on 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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