Annual report [Section 13 and 15(d), not S-K Item 405]

Consolidated Balance Sheets (Parenthetical)

v3.25.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Investments in marketable securities, amortized cost $ 2,116,000 $ 12,838,000
Allowance for doubtful accounts 239,000 189,000
Allowance for tax credits receivable 187,000 527,000
Tax credits receivable, allowance $ 421,000 $ 0
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 190,000,000 190,000,000
Common stock, shares issued 46,285,078 35,323,217
Common stock, shares outstanding 46,209,081 35,247,744
Treasury stock, shares 75,997 75,473
Series A Preferred Stock [Member]    
Preferred stock, shares authorized 6,000 6,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Preferred stock, par value $ 0.001 $ 0.001
Series B Preferred Stock [Member]    
Preferred stock, shares authorized 0 1
Preferred stock, shares issued 0 1
Preferred stock, shares outstanding 0 1
Preferred stock, par value $ 0.001 $ 0.001
Series C Preferred Stock [Member]    
Preferred stock, shares authorized 50,000 50,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Preferred stock, par value $ 0.001 $ 0.001