Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 1,554	$ 2,437	$ 4,226	$ 5,221
Other comprehensive income, net of tax:
Change in net foreign currency translation adjustment	1,090	(708)	1,991	(374)
Available-for-sale investments:
Change in net unrealized gains (losses) (net of tax effect of $0 in all periods)	68	(240)	149	370
Less: reclassification adjustment for net gains (losses) included in net income (net of tax effect of $(4), $247, $(6) and $394)	5	(459)	10	(732)
Net change	73	(699)	159	(362)
Other comprehensive income (loss)	1,163	(1,407)	2,150	(736)
Comprehensive income	$ 2,717	$ 1,030	$ 6,376	$ 4,485

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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