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OPTIONS AND AWARDS - EMPLOYEE STOCK OPTION ACTIVITY (Details) - The Ensign Plans - $ / shares
shares in Thousands
3 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Number of Options Outstanding    
Beginning balance, outstanding (in shares) 2,219  
Granted (in shares) 467  
Exercised (in shares) (25)  
Forfeited (in shares) (24)  
Expired (in shares) (24)  
Ending balance, outstanding (in shares) 2,613  
Weighted Average Exercise Price    
Beginning of period, weighted average exercise price (in dollars per share) $ 20.76  
Granted (in dollars per share) 15.02  
Exercised (in dollars per share) 7.95  
Forfeited (in dollars per share) 21.67  
Expired (in dollars per share) 19.58  
End of period, weighted average exercise price (in dollars per share) $ 19.70  
Number of options vested (in shares) 1,008 973
Weighted average exercise price of options vested (in dollars per share) $ 17.31 $ 16.90