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Shareholders' Equity - Stock Option Activity (Details) - Stock option - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Number of Options Outstanding    
Balance at beginning of period (in shares) 70,000 218,750
Exercised (in shares)   (138,750)
Expired/Forfeited (in shares)   (10,000)
Balance at period-end (in shares) 70,000 70,000
Exercisable at period-end (in shares) 70,000 70,000
Weighted average exercise price    
Balance at beginning of period (in dollars per share) $ 5.03 $ 5.28
Exercised (in dollars per share)   5.38
Expired/Forfeited (in dollars per share)   5.51
Balance at period-end (in dollars per share) 5.03 5.03
Exercisable at period-end (in dollars per share) $ 5.03 $ 5.03
Additional disclosures    
Weighted average expected remaining term 6 months 18 days