Quarterly report pursuant to Section 13 or 15(d)

Severance and Other Restructuring Costs - Change in Severance Liability (Detail)

v3.3.1.900
Severance and Other Restructuring Costs - Change in Severance Liability (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2015
Oct. 31, 2014
Restructuring and Related Activities [Abstract]        
Accrual balance at the beginning of the period     $ 2,021  
Severance and other restructuring charges incurred $ 197 $ 1,186 1,026 $ 1,878
Severance costs paid     (2,898)  
Other adjustments     (132)  
Accrual balance at the ending of the period $ 17   $ 17