Description of Business and Summary of Significant Accounting Policies Investment Securities Table (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2014	Feb. 28, 2013
Gain (Loss) on Investments [Line Items]
Trading Securities, Fair Value Disclosure	$ 4,234	$ 3,657
Available-for-sale Securities, Fair Value Disclosure	3	3
Marketable Securities	14,102	13,570
Other investment at cost	9,865	9,910
Long Term Investments, Cost Basis	14,099	13,567
Long Term Investments, Unrealized Holding Gain (Loss)	3	3
Investments, Fair Value Disclosure	14,102	13,570
Deferred Compensation, Share-based Payments [Member]
Gain (Loss) on Investments [Line Items]
Trading Securities, Cost	4,234	3,657
Trading Securities, Fair Value Disclosure	4,234	3,657
Trading Securities, Holding Gain (Loss)	0	0
Held-to-maturity Securities [Member]
Gain (Loss) on Investments [Line Items]
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	7,640	7,591
Held-to-maturity Securities, Unrecognized Holding Gain (Loss)	0	0
Held-to-maturity Securities, Fair Value	7,640	7,591
Categories of Investments, Marketable Securities, Trading Securities [Member]
Gain (Loss) on Investments [Line Items]
Marketable Securities, Cost Basis	11,874	11,248
Marketable Securities, Unrealized Holding Gain (Loss	3	3
Marketable Securities	11,877	11,251
Other Long-term Investments [Member]
Gain (Loss) on Investments [Line Items]
Other Long Term Investment, Cost Basis	2,225	2,319
Other Long Term Investment, Unrealized Holding Gain (Loss)	0	0
Other investment at cost	2,225	2,319
Cellstar [Member] | Available-for-sale Securities [Member]
Gain (Loss) on Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	0	0
Available-for-sale Securities, Unrealized Gains (Losses)	3	3
Available-for-sale Securities, Fair Value Disclosure	3	3
Bliss-tel [Member] | Available-for-sale Securities [Member]
Gain (Loss) on Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	0	0
Available-for-sale Securities, Unrealized Gains (Losses)	0	0
Available-for-sale Securities, Fair Value Disclosure	$ 0	$ 0