MARKETABLE SECURITIES (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Fair Value [Member]
Schedule of Investments [Line Items]
Government securities	$ 12,625,000	$ 16,462,000
Fixed income mutual funds	8,083,000	9,732,000
Certificates of deposit	759,000	761,000
Corporate bonds and notes	2,000,000	500,000
Total marketable securities	23,467,000	27,455,000
Cost Basis [Member]
Schedule of Investments [Line Items]
Government securities	12,576,000	16,470,000
Fixed income mutual funds	7,855,000	9,630,000
Certificates of deposit	752,000	752,000
Corporate bonds and notes	2,027,000	496,000
Total marketable securities	23,210,000	27,348,000
Gross Unrealized Gains [Member]
Schedule of Investments [Line Items]
Government securities	95,000	63,000
Fixed income mutual funds	228,000	132,000
Certificates of deposit	7,000	9,000
Corporate bonds and notes		4,000
Total marketable securities	330,000	208,000
Gross Unrealized Losses [Member]
Schedule of Investments [Line Items]
Government securities	(46,000)	(71,000)
Fixed income mutual funds		(30,000)
Certificates of deposit
Corporate bonds and notes	(27,000)
Total marketable securities	$ (73,000)	$ (101,000)

NETWORK-1 TECHNOLOGIES, INC. 10-K