Annual report pursuant to Section 13 and 15(d)

Severance and Other Restructuring Costs - Additional Information (Detail)

v3.3.1.900
Severance and Other Restructuring Costs - Additional Information (Detail)
$ in Thousands
 1 Months Ended 12 Months Ended
Apr. 06, 2016
USD ($)
Installments
Feb. 29, 2016
USD ($)
Jan. 31, 2016
USD ($)
Jan. 31, 2015
USD ($)
Jan. 31, 2014
USD ($)
Restructuring Cost and Reserve [Line Items]          
Restructuring charges     $ 1,061 $ 3,623 $ 911
Severance costs     1,000    
Other restructuring charges, (primarily due to the write off of leasehold improvements)     $ 100    
Subsequent Event [Member] | CEO [Member] | Separation Agreement [Member]          
Restructuring Cost and Reserve [Line Items]          
Employee separation related liabilities including bonus payable $ 1,400        
Bonus payable 600        
Employee separation liability payable $ 800        
Number of equal monthly installments | Installments 12        
Timeline Labs [Member] | Subsequent Event [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges   $ 700