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Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Feb. 10, 2023
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2022
Income Taxes [Line Items]        
Net deferred tax assets   $ 46,176,000 $ 70,940,000  
Valuation allowance for certain other foreign and state net operating loss carryforwards   0    
Cash and cash equivalents   178,321,000 201,260,000  
Unrecognized tax benefit that, if recognized, would impact the effective tax rate   23,066,000 21,890,000  
Recognized (benefit)/expense in interest and penalties   1,629,000 1,145,000 $ 630,000
Accrued amounts for payment of interest and penalties   6,214,000 4,586,000  
Unrecognized tax benefits, lower bound   0    
Unrecognized tax benefits, upper bound       17,623,000
Income Tax Expense (Benefit)   93,933,000 61,580,000 $ 94,015,000
Investment Tax Credit   62,120,000    
Total payment   100,000,000    
U.S. Affordable Housing Real Estate Partnership        
Income Taxes [Line Items]        
Committed to invest in realestate $ 100,000,000      
initial payment $ 20,000,000      
Income Tax Examination, Interest Expense   6,190,000    
Income Tax Expense (Benefit)   6,669,000    
Investment period 5 years      
U.S. Federal        
Income Taxes [Line Items]        
Net deferred tax assets   18,421,000 42,277,000  
Net operating loss carryforwards, do not expire   12,482,000    
Net operating loss carryforwards   $ 23,767,000    
Tax credit carryforwards     5,137,000  
U.S. Federal | Earliest Tax Year        
Income Taxes [Line Items]        
Expiration date   2024    
Tax credit expiration date   2027    
U.S. Federal | Latest Tax Year        
Income Taxes [Line Items]        
Expiration date   2044    
Tax credit expiration date   2029    
State and Local Jurisdiction        
Income Taxes [Line Items]        
Net deferred tax assets   $ 19,637,000 18,458,000  
Foreign Jurisdictions        
Income Taxes [Line Items]        
Net deferred tax assets   8,118,000 $ 10,205,000  
Net operating loss carryforwards, expire 2019 through 2029   50,700,000    
Cash and cash equivalents   114,365,000    
Accumulated undistributed earning   $ 406,470,000