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Note 15 - Earning Per Share (Details Textual) - USD ($)
shares in Thousands, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Series B Preferred Stock [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 1,000 1,000 1,000 1,000
Series C Preferred Stock [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 1,100 1,000 1,100 1,000
Two Thousand Twenty One Convertible Notes [Member]        
Antidilutive Securities Excluded From Computation of Earnings Per Share, Amount, Value $ 25 $ 25 $ 25 $ 25
Restricted Stock Units (RSUs) [Member]        
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements (in shares) 700      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)   0   300
Share-Based Payment Arrangement, Option [Member]        
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements (in shares) 1,300      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 3,300 3,100 3,400 3,100