Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Beginning and Ending Balance of Total Amounts of Gross Unrecognized Tax Benefits (Detail)

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Income Taxes - Reconciliation of Beginning and Ending Balance of Total Amounts of Gross Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Income Tax Disclosure [Abstract]    
Balance of gross unrecognized tax benefits, beginning of period $ 5,151 $ 5,527
Gross amounts of increases in unrecognized tax benefits as a result of tax positions taken in the current period 321  
Decrease due to expiration of statute of limitation (269) (325)
Decrease for tax positions related to prior years (96)  
Effect of currency translation (14) (51)
Balance of gross unrecognized tax benefits, end of period $ 5,093 $ 5,151