Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.21.1
Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Income Taxes Disclosure [Line Items]      
Cash dividends $ 4,400,000    
Deferred tax assets, operating loss carry forwards, domestic 131,100,000    
Deferred tax assets, operating loss carry forwards, state and local 77,400,000    
Deferred tax assets, operating loss carry forwards, foreign $ 9,400,000    
Operating loss carry forwards, expiry beginning year 2022    
Deferred tax assets, tax credit carry forwards, foreign $ 2,000,000.0    
Tax credit carry forward with an unlimited carryforward period 200,000    
Valuation allowance 43,439,000 $ 38,248,000  
Valuation allowance increased (decreased) (5,200,000) (3,700,000)  
Unrecognized tax benefits 4,632,000 4,306,000 $ 4,318,000
Total gross interest accrued 100,000 100,000  
Uncertain tax positions   0  
Unrecognized tax benefits that would impact effective tax rate 100,000 $ 100,000  
Deferred Revenue, Long-Term [Member]      
Income Taxes Disclosure [Line Items]      
Unrecognized tax benefits 4,600,000    
Federal [Member]      
Income Taxes Disclosure [Line Items]      
Deferred tax assets, tax credit carry forwards, research 3,800,000    
State and Local Jurisdiction [Member]      
Income Taxes Disclosure [Line Items]      
Deferred tax assets, tax credit carry forwards, research 1,800,000    
Deferred tax assets tax credit carry forward investment $ 200,000