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, 2016
Jan. 31, 2015
Income Tax Disclosure [Abstract]    
Balance of gross unrecognized tax benefits, beginning of period $ 5,527 $ 6,035
Gross amounts of increases in unrecognized tax benefits as a result of tax positions taken in the current period   96
Decrease due to expiration of statute of limitation (325) (275)
Effect of currency translation (51) (329)
Balance of gross unrecognized tax benefits, end of period $ 5,151 $ 5,527