Note 8 - Stock-based Incentive Plans (Tables)
|
12 Months Ended |
Dec. 31, 2025 |
|---|
| Notes Tables |
|
| Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
| |
|
2025
|
|
|
2024
|
|
|
Expected volatility
|
|
|
132.7 |
% |
|
|
98 |
% |
|
Risk–free interest rate
|
|
|
3.65 |
% |
|
|
4.08 |
% |
|
Dividend yield
|
|
|
- |
% |
|
|
- |
% |
|
Expected life of options (in years)
|
|
|
5.53 |
|
|
|
6.02 |
|
|
| Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
| |
|
|
|
|
|
Weighted-Average
|
|
|
|
|
|
| |
|
Options (#)
|
|
|
Exercise
Price Per
Share ($)
|
|
|
Remaining
Contractual
Term
(Years)
|
|
|
Aggregate
Intrinsic
Value ($)
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Outstanding at December 31, 2024
|
|
|
1,000 |
|
|
$ |
7,533.48 |
|
|
|
|
|
|
$ |
- |
|
|
Granted
|
|
|
82,000 |
|
|
|
12.60 |
|
|
|
|
|
|
|
- |
|
|
Exercised
|
|
|
- |
|
|
|
- |
|
|
|
|
|
|
|
- |
|
|
Expired
|
|
|
- |
|
|
|
- |
|
|
|
|
|
|
|
- |
|
|
Canceled / forfeited
|
|
|
(3,000 |
)
|
|
|
1,854.96 |
|
|
|
|
|
|
|
- |
|
|
Outstanding at December 31, 2025
|
|
|
80,000 |
|
|
$ |
12.36 |
|
|
|
9.89 |
|
|
$ |
- |
|
|
Vested and exercisable at December 31, 2025
|
|
|
1,000 |
|
|
$ |
40.56 |
|
|
|
9.89 |
|
|
$ |
- |
|
|
| Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
| |
|
2025 Plan / 2014 Plan
Activity
|
|
|
Outside of the 2025 and
2014 Plans
Activity
|
|
|
Totals
|
|
| |
|
Restricted
Stock
Units (#)
|
|
|
Weighted
Average
Grant Date
Fair Value
($)
|
|
|
Restricted
Stock
Units (#)
|
|
|
Weighted
Average
Grant Date
Fair Value
($)
|
|
|
Restricted
Stock
Units (#)
|
|
|
Weighted
Average
Grant Date
Fair Value
($)
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
At December 31, 2024
|
|
|
1,000 |
|
|
$ |
2,113.32 |
|
|
|
- |
|
|
$ |
1,881.60 |
|
|
|
1,000 |
|
|
$
|
2,006.04 |
|
|
Granted
|
|
|
448,000 |
|
|
$ |
10.92 |
|
|
|
42,000 |
|
|
|
28.44 |
|
|
|
490,000 |
|
|
|
12.48 |
|
|
Vested
|
|
|
(9,000 |
)
|
|
$ |
66.60 |
|
|
|
(26,000 |
)
|
|
|
44.40 |
|
|
|
(35,000 |
)
|
|
|
49.92 |
|
|
Canceled
|
|
|
(1,000 |
)
|
|
$ |
725.64 |
|
|
|
- |
|
|
|
8,910.72 |
|
|
|
(1,000 |
) |
|
|
1,031.04 |
|
|
At December 31, 2025
|
|
|
439,000 |
|
|
$ |
10.68 |
|
|
|
16,000 |
|
|
$ |
20.76 |
|
|
|
455,000 |
|
|
$ |
10.92 |
|
|
| Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] |
| |
|
|
|
|
|
Weighted-Average
|
|
|
|
|
|
| |
|
Warrants
(#)
|
|
|
Exercise
Price Per
Share ($)
|
|
|
Remaining
Contractual
Term
(Years)
|
|
|
Aggregate
Intrinsic
Value ($)
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Outstanding at December 31, 2024
|
|
|
- |
|
|
$ |
- |
|
|
|
- |
|
|
$ |
- |
|
|
Granted
|
|
|
3,000 |
|
|
|
18.54 |
|
|
|
- |
|
|
|
- |
|
|
Expired
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
Outstanding at December 31, 2025
|
|
|
3,000 |
|
|
$ |
124.20 |
|
|
|
2.03 |
|
|
$ |
- |
|
|
Vested and exercisable as of December 31, 2025
|
|
|
2,000 |
|
|
$ |
171.48 |
|
|
|
1.95 |
|
|
$ |
- |
|
|
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
| |
|
2025
|
|
|
2024
|
|
|
Stock options
|
|
$ |
571,000 |
|
|
$ |
411,000 |
|
|
Warrants
|
|
|
38,000 |
|
|
|
- |
|
|
Restricted stock units
|
|
|
1,702,000 |
|
|
|
878,000 |
|
|
Total noncash stock compensation expense
|
|
$ |
2,311,000 |
|
|
$ |
1,289,000 |
|
| |
|
2025
|
|
|
2024
|
|
|
Sales, marketing and advertising
|
|
$ |
460,000 |
|
|
$ |
488,000 |
|
|
Engineering, technology and development
|
|
|
22,000 |
|
|
|
30,000 |
|
|
General and administrative
|
|
|
1,829,000 |
|
|
|
771,000 |
|
|
Total noncash stock compensation expense
|
|
$ |
2,311,000 |
|
|
$ |
1,289,000 |
|
|