Annual report pursuant to Section 13 and 15(d)

Equity-Based Compensation - Incentive units (Details)

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Equity-Based Compensation - Incentive units (Details) - Restricted Stock [Member] - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Incentive Units      
Granted and outstanding at beginning of period (in shares) 174,503 142,500 108,500
Granted (in shares) 18,400 49,119 50,000
Forfeited (in shares) (10,709) (10,000) (16,000)
Repurchased (in shares) (6,202) (7,116)  
Granted and Outstanding at end of period (in shares) 175,992 174,503 142,500
Vested at December 31, 2021 (in shares) 129,972    
Weighted Average Grant Date Fair Value      
Granted and Outstanding at beginning of period (in dollars per shares) $ 38.82 $ 38.10 $ 49.89
Granted (in dollars per shares) 215.31 95.27 5.13
Forfeited (in dollars per shares) 100.66 15.40 15.04
Repurchased (in dollars per shares) 476.06 447.15  
Granted and Outstanding at end of period (in dollars per shares) 38.09 $ 38.82 $ 38.10
Vested at December 31, 2021 (in dollars per share) $ 56.41    
Total Value      
Granted and Outstanding at beginning of period $ 6,773 $ 5,429 $ 5,413
Granted 3,962 4,680 257
Forfeited (1,078) (154) (241)
Repurchased (2,953) (3,182)  
Granted and Outstanding at end of period 6,704 $ 6,773 $ 5,429
Vested at December 31, 2021 $ 7,332