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Stockholders' and Members' Equity, Equity-Based Compensation (Details)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Oct. 01, 2021
shares
Sep. 30, 2021
shares
Mar. 31, 2021
USD ($)
$ / shares
shares
Mar. 31, 2021
USD ($)
Intallment
$ / shares
shares
Feb. 11, 2020
shares
Equity-Based Compensation [Abstract]          
Percentage of expected performance targets to be achieved target award     150.00% 150.00%  
Expense related to performance award | $     $ 0.2 $ 0.3  
Class A Common Stock [Member]          
Equity-Based Compensation [Abstract]          
Total number of shares reserved for issuance (in shares)         1,503,902
Restricted Stock Units (RSUs) [Member]          
Number of Shares [Abstract]          
Beginning balance (in shares)       301,643  
Awarded (in shares)       202,514  
Vested (in shares)       (75,895)  
Forfeited (in shares)       0  
Ending balance (in shares)     428,262 428,262  
Weighted Average Grant Date Fair Value [Abstract]          
Beginning balance (in dollars per share) | $ / shares       $ 15.78  
Awarded (in dollars per share) | $ / shares       23.43  
Vested (in dollars per share) | $ / shares       15.70  
Forfeited (in dollars per share) | $ / shares       0  
Ending balance (in dollars per share) | $ / shares     $ 19.41 $ 19.41  
Compensation expense | $     $ 1.1 $ 2.2  
Unrecognized compensation expense | $     $ 5.7 $ 5.7  
Weighted-average period of recognition       1 year 7 months 6 days  
Time-Based Restricted Stock Units [Member]          
Equity-Based Compensation [Abstract]          
Number of equal annual installments for vesting | Intallment       4  
Number of Shares [Abstract]          
Awarded (in shares)       114,665  
Time-Based Restricted Stock Units [Member] | Plan [Member]          
Number of Shares [Abstract]          
Awarded (in shares) 25,622 89,043      
Performance Share Unit [Member]          
Equity-Based Compensation [Abstract]          
Award vesting period       3 years  
Percentage of target award granted       100.00%  
Number of equal annual installments for vesting | Intallment       3  
Number of shares of common stock consisted in each unit (in shares)       1  
Number of Shares [Abstract]          
Awarded (in shares)       58,566  
Performance Share Unit [Member] | Minimum [Member]          
Equity-Based Compensation [Abstract]          
Percentage of actual number of unit earned       0.00%  
Performance Share Unit [Member] | Maximum [Member]          
Equity-Based Compensation [Abstract]          
Percentage of actual number of unit earned       200.00%