Investment Securities (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013	Feb. 28, 2014		Aug. 31, 2014 Rx Networks [Member]	Aug. 31, 2014 Eyelock [Member]	Aug. 31, 2014 Eyelock [Member]	Aug. 31, 2014 Bliss-tel [Member]	Aug. 31, 2014 Deferred Compensation, Share-based Payments [Member]	Feb. 28, 2014 Deferred Compensation, Share-based Payments [Member]	Aug. 31, 2014 Available-for-sale Securities [Member] Cellstar [Member]	Feb. 28, 2014 Available-for-sale Securities [Member] Cellstar [Member]	Aug. 31, 2014 Held-to-maturity Securities [Member]	Feb. 28, 2014 Held-to-maturity Securities [Member]	Aug. 31, 2014 Trading Securities [Member]	Feb. 28, 2014 Trading Securities [Member]	Aug. 31, 2014 Other Long-term Investments [Member]	Feb. 28, 2014 Other Long-term Investments [Member]	Aug. 31, 2014 Venezuelan bolívar fuerte	Feb. 12, 2013 Venezuelan bolívar fuerte
Gain (Loss) on Investments [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ 237	$ 49	$ 365	$ (184)
Foreign Currency Exchange Rate, Translation																					6.3	4.3
Trading Securities, Cost											4,293	4,234
Trading Securities, Change in Unrealized Holding Gain (Loss)											0	0
Trading Securities, Fair Value Disclosure	4,293		4,293		4,234						4,293	4,234
Available-for-sale Securities, Amortized Cost Basis													0	0
Available-For-Sale Securities, Gross Unrealized Gains (Losses)													3	3
Available-for-sale Securities, Fair Value Disclosure	3		3		3					0			3	3
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment															966	7,640
Held-to-maturity Securities, Unrecognized Holding Gain (Loss)															0	0
Held-to-maturity Securities, Fair Value															966	7,640
Marketable Securities, Cost Basis																	5,259	11,874
Marketable Securities, Unrealized Holding Gain (Loss																	3	3
Marketable Securities																	5,262	11,877
Other Long Term Investment, Cost Basis																			8,251	2,225
Other Long Term Investment, Unrealized Holding Gain (Loss)																			0	0
Other investment at cost	9,217		9,217		9,865	[1]													8,251	2,225
Long Term Investments, Cost Basis	13,510		13,510		14,099
Long Term Investments, Unrealized Holding Gain (Loss)	3		3		3
Investments, Fair Value Disclosure	13,513		13,513		14,102
Equity Method Investment, Ownership Percentage	20.00%		20.00%
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	0	0	0	0
Investment Owned, Balance, Shares										72,500,000
Cost Method Investments	8,251		8,251				2,251	3,000	3,000
Cost Method Investment, Owndership Percentage							16.50%	6.50%	3.50%
Proceeds from Loans	$ 250

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