Note 2 - Basis of Presentation and Recent Accounting Pronouncements - Fair Value of Items Measured on a Recurring Basis (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Investments in debt securities (short-term)	$ 5,563,000	$ 9,453,000	$ 11,696,000
Investments in debt securities (long-term)	7,053,000	6,877,000	$ 6,368,000
Fair Value, Recurring [Member]
Investments in debt securities (short-term)	5,563,000	9,453,000
Investments in debt securities (long-term)	7,053,000	6,877,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investments in debt securities (short-term)	5,363	8,953,000
Investments in debt securities (long-term)	4,932,000	5,119,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investments in debt securities (short-term)	200,000	500,000
Investments in debt securities (long-term)	2,121,000	1,758,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investments in debt securities (short-term)	0	0
Investments in debt securities (long-term)	$ 0	$ 0

LIQUIDMETAL TECHNOLOGIES INC 10-Q