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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2014
Income Taxes [Line Items]      
Net deferred tax assets $ 54,248 $ 68,677  
Net deferred tax assets, non-current 54,248 49,922  
Unrecognized tax benefit that, if recognized, would impact the effective tax rate 5,698 4,952  
Recognized (benefit)/expense in interest and penalties (686) 408 $ (1,922)
Accrued amounts for payment of interest and penalties 800 1,486  
Unrecognized tax benefits, lower bound 0    
Unrecognized tax benefits, upper bound 1,103    
U.S. Federal      
Income Taxes [Line Items]      
Net deferred tax assets 28,249 43,330  
Net operating loss carryforwards 868    
Tax credit carryforwards $ 6,524    
U.S. Federal | Earliest Tax Year      
Income Taxes [Line Items]      
Expiration date 2017    
Tax credit expiration date 2017    
U.S. Federal | Latest Tax Year      
Income Taxes [Line Items]      
Expiration date 2027    
Tax credit expiration date 2031    
State and Local Jurisdiction      
Income Taxes [Line Items]      
Net deferred tax assets $ 17,391 16,097  
Foreign Jurisdictions      
Income Taxes [Line Items]      
Net deferred tax assets 8,608 $ 9,250  
Net operating loss carryforwards, expire 2017 through 2033 244    
Net operating loss carryforwards, do not expire 19,735    
Undistributed earnings $ 255,467    
Foreign Jurisdictions | Earliest Tax Year      
Income Taxes [Line Items]      
Expiration date 2017    
Foreign Jurisdictions | Latest Tax Year      
Income Taxes [Line Items]      
Expiration date 2033