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Stock Compensation Plans (Tables)
 6 Months Ended
Jun. 30, 2022
Stock Compensation Plans [Abstract]  
Equity Award Grants
Charter granted the following equity awards for the periods presented.

Three Months Ended June 30, Six Months Ended June 30,
2022202120222021
Stock options32,000 16,800 1,404,400 1,241,800 
Restricted stock6,800 4,600 6,800 4,600 
Restricted stock units19,500 9,100 443,100 354,200