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Note 12 - Equity-based Compensation - Stock Appreciation Rights (Details) - Stock Appreciation Rights (SARs) [Member] - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Outstanding, stock appreciation rights (in shares) 45,740  
Outstanding, weighted average exercise price (in dollars per share) $ 1,075.34  
Outstanding, weighted average fair value (in dollars per share) $ 263.62  
Outstanding, aggregate intrinsic value $ 3,087 $ 32,897
Weighted average remaining contractual term, outstanding (Year) 6 years 3 months 18 days 7 years 1 month 6 days
Granted, restricted stock (in shares) 0  
Granted, weighted average exercise price (in dollars per share) $ 0  
Granted, weighted average grant date fair value (in dollars per share) $ 0  
Exercised, stock appreciation rights (in shares) (2,500)  
Exercised, weighted average exercise price (in dollars per share) $ 707.16  
Exercised, weighted average fair value (in dollars per share) $ 164.67  
Exercised, aggregate intrinsic value $ 1,504  
Forfeited, stock appreciation rights (in shares) (1,750)  
Forfeited, weighted average exercise price (in dollars per share) $ 1,492.73  
Forfeited, weighted average grant date fair value (in dollars per share) $ 375.76  
Expired, stock appreciation rights (in shares) (375)  
Expired, weighted average exercise price (in dollars per share) $ 1,851.23  
Expired, weighted average fair value (in dollars per share) $ 469.52  
Outstanding, stock appreciation rights (in shares) 41,115 45,740
Outstanding, weighted average exercise price (in dollars per share) $ 1,072.88 $ 1,075.34
Outstanding, weighted average fair value (in dollars per share) $ 262.99 $ 263.62
Vested and exercisable, stock appreciation rights (in shares) 26,990  
Vested and exercisable, weighted average exercise price (in dollars per share) $ 856.22  
Vested and exercisable, weighted average fair value (in dollars per share) $ 204.49  
Vested and exercisable, aggregate intrinsic value $ 2,958  
Weighted average remaining contractual term, vested and exercisable (Year) 5 years 8 months 12 days