Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional information (Details)

v3.21.2
Fair Value Measurements - Additional information (Details)
$ in Millions
 1 Months Ended 2 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Jun. 12, 2021
Jun. 11, 2021
USD ($)
Jun. 11, 2021
Jul. 31, 2021
Jul. 31, 2021
Apr. 30, 2021
Jul. 31, 2020
Apr. 30, 2020
Jun. 11, 2021
Jul. 31, 2021
USD ($)
Jul. 31, 2020
Jan. 31, 2021
Jan. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Financial Designation, Predecessor and Successor [Fixed List] Successor   Predecessor Successor Successor Predecessor Predecessor Predecessor Predecessor Successor Predecessor Predecessor Predecessor
Terminated for consideration   $ 0.0                      
Volatility                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Measurement input   0.31 0.31 0.33 0.33       0.31 0.33      
Volatility | Held-to-maturity scenario                          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                          
Recorded gain                   $ 0.9