Description of Business and Summary of Significant Accounting Policies Investment Securities Notes (Details) - USD ($) $ in Thousands	12 Months Ended
Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015
Reversals for Unclaimed Sales Incentives	$ 0	$ 0	$ 8
Foreign Currency Transaction Gain (Loss), before Tax	(509)	108	(6,504)
Cost Method Investments	6,288
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	0	0	0
Rx Networks [Member]
Cost Method Investments	$ 1,835	1,819
Cost Method Investment, Ownership Percentage	10.20%
Eye See 360 [Member]
Cost Method Investments	$ 4,453
Cost Method Investment, Additional Investment In	$ 0
Cost Method Investment, Ownership Percentage	4.70%
VENEZUELA
Foreign Currency Transaction Gain (Loss), before Tax	$ (8)	$ (2)	$ (7,104)
Available-for-sale Securities [Member]
Equity Method Investment, Ownership Percentage	20.00%

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Cost Method Investment, Additional Investment In

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The percentage of ownership of common stock or equity participation in the investee accounted for under the cost method of accounting.

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Represents the aggregate decrease in the liability as a result ot the reversal of incentives that were not claimed by customers before the expiration of applicable incentive programs.

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