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Stock Based Compensation (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2022
USD ($)
item
shares
Jun. 30, 2021
USD ($)
shares
Stock-based compensation    
Number of stock-based employee compensation plans | item 4  
Number of executive stock award plans | item 3  
Outstanding stock options (in shares) 0 0
Total unrecognized compensation cost related to non-vested share-based compensation arrangements | $ $ 9,200  
Weighted-average period over which unrecognized compensation cost is expected to be recognized 3 years 4 months 17 days  
Stock options    
Stock-based compensation    
Total fair value of options vested and expensed | $ $ 0 $ 0
Outstanding stock options (in shares) 0 0
Stock options exercised (in shares) 0 0