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Stock Based Compensation - Subsidiary Incentive Plans (Details) - Subsidiary Incentive Plan - Restricted Stock Units (RSUs)
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
shares
Number of shares issuable  
Unvested balance, beginning of period $ 2,234
Granted 160
Vested (935)
Performance assumption adjustment 80
Unvested balance, end of period $ 1,539
Vested shares, if converted (in shares) | shares 1,778,134