Quarterly report pursuant to Section 13 or 15(d)

Nature of Business and Basis of Presentation - Schedule of Adjusted Consolidated Statements of Cash Flow (Detail)

v3.3.1.900
Nature of Business and Basis of Presentation - Schedule of Adjusted Consolidated Statements of Cash Flow (Detail) - USD ($)
$ in Thousands
9 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Significant Accounting Policies [Line Items]    
Inventories $ 1,207 $ (1,853)
Accrued expenses (4,056) $ (1,882)
Scenario, Forecast [Member]    
Significant Accounting Policies [Line Items]    
Inventories 472  
Accrued expenses (5,735)  
As Previously Reported [Member]    
Significant Accounting Policies [Line Items]    
Inventories (1,207)  
Accrued expenses (4,056)  
Adjustment [Member]    
Significant Accounting Policies [Line Items]    
Inventories 1,679  
Accrued expenses $ (1,679)