Investment Securities (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2017 USD ($) Rate	Aug. 31, 2016 USD ($)	Aug. 31, 2017 USD ($) Rate	Aug. 31, 2016 USD ($)	Feb. 28, 2017 USD ($)	Feb. 29, 2016
Gain (Loss) on Investments [Line Items]
Investments	$ 8,760		$ 8,760		$ 10,382
Long Term Investments, Unrealized Holding Gain (Loss)	$ 3		$ 3		6
Other Investments and Securities, at Cost					6,288
Equity Method Investment, Ownership Percentage	20.00%		20.00%
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$ 0	$ 0	$ 0	$ 0
Notes, Loans and Financing Receivable, Gross, Noncurrent	$ 2,000		$ 2,000
Loans Receivable with Fixed Rates of Interest | Rate	8.00%		8.00%
Realized Investment Gains (Losses)			$ 1,416
Investments, Fair Value Disclosure	$ 8,763		$ 8,763		10,388
Rx Networks [Member]
Gain (Loss) on Investments [Line Items]
Cost Method Investment, Owndership Percentage	8.30%		8.30%
Eye See 360 [Member]
Gain (Loss) on Investments [Line Items]
Cost Method Investments	$ 4,453		$ 4,453
Cost Method Investment, Owndership Percentage	5.00%		5.00%
Fathom [Member] [Domain]
Gain (Loss) on Investments [Line Items]
Cost Method Investments	$ 558		$ 558
Cost-method Investments [Member]
Gain (Loss) on Investments [Line Items]
Other Long Term Investment, Unrealized Holding Gain (Loss)	0		0		0
Security Owned Not Readily Marketable, Quoted Price	5,011		5,011		6,288
Cost Method Investments	5,011		5,011
Deferred Compensation, Share-based Payments [Member]
Gain (Loss) on Investments [Line Items]
Trading Securities, Cost	3,749		3,749		4,094
Trading Securities, Fair Value Disclosure	3,749		3,749		4,094
Trading Securities, Holding Gain (Loss)	0		0		0
Available-for-sale Securities [Member] | Cellstar [Member]
Gain (Loss) on Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	0		0		0
Available-for-sale Securities, Fair Value Disclosure	3		3		6
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax	3		3		6
Trading Securities [Member]
Gain (Loss) on Investments [Line Items]
Marketable Securities, Unrealized Holding Gain (Loss	3		3		6
Marketable Securities	$ 3,749		$ 3,749		4,094
Venezuelan bolívar fuerte
Gain (Loss) on Investments [Line Items]
Foreign Currency Exchange Rate, Translation	10,000		10,000			6.3
Fair Value Measurement [Domain] | Trading Securities [Member]
Gain (Loss) on Investments [Line Items]
Marketable Securities	$ 3,752		$ 3,752		$ 4,100