v3.26.1
Schedule of Cash and Marketable Securities by Significant Investment Category (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Cash and Cash Equivalents [Line Items]    
Cost $ 20,579,000 $ 32,697,000
Unrealized Gain/(Loss) (13,702,000) (17,172,000)
Fair Value 6,877,000 15,525,000
Cash and Cash Equivalents 4,068,000 6,314,000
Current marketable securities 2,809,000 9,211,000
Cash [Member]    
Cash and Cash Equivalents [Line Items]    
Cost 4,013,000 4,981,000
Unrealized Gain/(Loss)
Fair Value 4,013,000 4,981,000
Cash and Cash Equivalents 4,013,000 4,981,000
Current marketable securities
Restricted Cash [Member]    
Cash and Cash Equivalents [Line Items]    
Cost 100,000
Unrealized Gain/(Loss)
Fair Value 100,000
Cash and Cash Equivalents 100,000
Current marketable securities
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]    
Cash and Cash Equivalents [Line Items]    
Cost 55,000 1,233,000
Unrealized Gain/(Loss)
Fair Value 55,000 1,233,000
Cash and Cash Equivalents 55,000 1,233,000
Current marketable securities
Marketable Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Cash and Cash Equivalents [Line Items]    
Cost 16,511,000 26,383,000
Unrealized Gain/(Loss) (13,702,000) (17,172,000)
Fair Value 2,809,000 9,211,000
Cash and Cash Equivalents
Current marketable securities $ 2,809,000 $ 9,211,000