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Note 15 - Stock Option Plans - Fair Value of Stock Options Granted (Details) - $ / shares
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
The 2022 Ting Equity Compensation Plan [Member]      
Volatility 36.30% 35.80%  
Risk-free interest rate 3.80% 3.80%  
Expected life (in years) (Year) 4 years 4 months 9 days 4 years 2 months 4 days  
Dividend yield 0.00% 0.00%  
The weighted average grant date fair value for options issued, with the exercise price equal to market value on the date of grant (in dollars per share) $ 0.13 $ 0.11  
Equity Compensation Plan 2006 [Member]      
Volatility 48.40% 42.60% 34.90%
Risk-free interest rate 4.20% 4.20% 3.40%
Expected life (in years) (Year) 4 years 5 months 12 days 4 years 5 months 15 days 4 years 7 months 6 days
Dividend yield 0.00% 0.00% 0.00%
The weighted average grant date fair value for options issued, with the exercise price equal to market value on the date of grant (in dollars per share) $ 9.61 $ 10.34 $ 14.93
The 2022 Wavelo Equity Compensation Plan [Member]      
Volatility 42.70% 40.60% 40.70%
Risk-free interest rate 4.60% 4.30% 4.40%
Expected life (in years) (Year) 4 years 4 months 17 days 4 years 2 months 1 day 4 years 1 month 28 days
Dividend yield 0.00% 0.00% 0.00%
The weighted average grant date fair value for options issued, with the exercise price equal to market value on the date of grant (in dollars per share) $ 0.52 $ 0.49 $ 0.49