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Compensation and Benefits - Non-cash Compensation Awards (Details) - $ / shares
12 Months Ended
Jan. 01, 2022
May 01, 2020
Dec. 31, 2021
Dec. 31, 2020
Compensation Arrangements [Line Items]        
Shares available for future issuance     11,540,776  
Class B-1 Units        
Compensation Arrangements [Line Items]        
Grants in period (in shares)     1,456,753 2,092,879
Equity Incentive Plan 2006        
Compensation Arrangements [Line Items]        
Shares available for future issuance     4,984,985  
Equity Incentive Plan 2006 | Delayed Exchange Class B Units        
Compensation Arrangements [Line Items]        
Grants in period (in shares)     810,857 620,543
Grants in period, weighted average grant date fair value (USD per share)     $ 4.68 $ 5.95
Equity Incentive Plan 2006 | Delayed Exchange Class B Units | Subsequent Event        
Compensation Arrangements [Line Items]        
Grants in period (in shares) 1,084,675      
Grants in period, weighted average grant date fair value (USD per share) $ 6.16      
Equity Incentive Plan 2006 | Deferred Compensation Phantom Delayed Exchange Class B Units        
Compensation Arrangements [Line Items]        
Grants in period (in shares)       188,283
Grants in period, weighted average grant date fair value (USD per share)       $ 4.67
Vesting period for units (in years)       4 years
Period after vesting for unit exchange (in years)       7 years
Equity Incentive Plan 2006 | Restricted Shares of Class A Common Stock | Subsequent Event        
Compensation Arrangements [Line Items]        
Grants in period (in shares) 17,057      
Grants in period, weighted average grant date fair value (USD per share) $ 6.16      
2007 Equity Incentive Plan        
Compensation Arrangements [Line Items]        
Shares available for future issuance     6,555,791  
2007 Equity Incentive Plan | Options to Purchase Shares of Class A Common Stock        
Compensation Arrangements [Line Items]        
Grants in period (in shares)       146,804
Grants in period, weighted average grant date fair value (USD per share)       $ 2.03
Vesting period for units (in years)   5 years    
Shares available for future issuance   146,804    
2007 Equity Incentive Plan | Restricted Shares of Class A Common Stock        
Compensation Arrangements [Line Items]        
Grants in period (in shares)     17,706 16,806
Grants in period, weighted average grant date fair value (USD per share)     $ 4.67 $ 4.74
Vesting period for units (in years)     4 years 4 years
Shares available for future issuance   16,806    
Ratably vests over four years (in shares)     5,353 16,806
Vests in period (in shares)     12,353  
2007 Equity Incentive Plan | Class B-1 Units        
Compensation Arrangements [Line Items]        
Grants in period (in shares)     1,456,753 2,092,879
Grants in period, weighted average grant date fair value (USD per share)     $ 2.41 $ 3.98
Shares cancelled   166,804    
Vesting period for units (in years)     4 years 4 years
Vests on fifth anniversary (in shares)     1,400,305 2,032,879
Ratably vests over four years (in shares)     38,462 60,000
Vests in period (in shares)     17,986