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Note 13 - Equity-based Compensation - Stock Options Outstanding (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Outstanding awards (in shares) 132    
Outstanding, weighted-average exercise price (in dollars per share) $ 37.99    
Outstanding, weighted-average remaining contractual life (Year) 7 years 3 months 18 days 7 years 6 months  
Outstanding, aggregate intrinsic value $ 48   $ 69
Options granted (in shares) 4    
Options granted, weighted-average exercise price (in dollars per share) $ 1.80    
Options forfeited/cancelled (in shares) (5)    
Options forfeited/cancelled, weighted-average exercise price (in dollars per share) $ 59.45    
Outstanding awards (in shares) 124    
Outstanding, weighted-average exercise price (in dollars per share) $ 38.34    
Vested and expected to vest (in shares) 95    
Vested and expected to vest, weighted-average exercise price (in dollars per share) $ 49.23    
Vested and expected to vest, weighted-average remaining contractual life (Year) 6 years 10 months 24 days    
Vested and expected to vest, aggregate intrinsic value $ 9    
Vested (in shares) 66    
Vested, weighted-average exercise price (in dollars per share) $ 65.02    
Vested, weighted-average remaining contractual life (Year) 6 years 1 month 6 days    
Exercisable (in shares) 66    
Exercisable, weighted-average exercise price (in dollars per share) $ 65.02    
Exercisable, weighted-average remaining contractual life (Year) 6 years 1 month 6 days    
Restricted Stock Units (RSUs) [Member]      
Restricted stock units cancelled (in shares) (7)