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

Note 8 - Stock-based Incentive Plans - Noncash Stock-based Compensation Expense (Details)

v3.25.1
Note 8 - Stock-based Incentive Plans - Noncash Stock-based Compensation Expense (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Stock options $ 411,000 $ 1,014,000
Total noncash stock compensation expense 1,289,000 2,735,000
Warrants 0 228,000
Restricted stock units 878,000 1,493,000
Total noncash stock compensation expense 1,289,000 2,735,000
Selling and Marketing Expense [Member]    
Total noncash stock compensation expense 488,000 879,000
Total noncash stock compensation expense 488,000 879,000
Research and Development Expense [Member]    
Total noncash stock compensation expense 30,000 219,000
Total noncash stock compensation expense 30,000 219,000
General and Administrative Expense [Member]    
Total noncash stock compensation expense 771,000 1,637,000
Total noncash stock compensation expense $ 771,000 $ 1,637,000