CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Apr. 30, 2014	Apr. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 3,737	$ 6,307
Change in cumulative translation adjustment	1,270	(1,581)
Comprehensive income	$ 5,007	$ 4,726

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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