Description of Business and Summary of Significant Accounting Policies Goodwill and Intangible Assets Notes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Goodwill and Intangible Assets [Line Items]
Goodwill, Impairment Loss	$ (32,163)	$ 0
Goodwill	117,938	146,680	86,069
Finite Lived Intangible Assets, Amortization Expense, Current	5,571
Finite Lived Intangible Assets, Amortization Expense, Due in Two Years	5,466
Finite Lived Intangible Assets, Amortization Expense, Due in Three Years	5,452
Finite Lived Intangible Assets, Amortization Expense, Due in Four Years	5,395
Finite Lived Intangible Assets Amortization Expense Next Five Years	5,229
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	21,715	0
Increase (Decrease) in Income Taxes Payable	(1,167)	5,197	6,022
Amortization of Intangible Assets	5,931	5,790	3,992
Hirschmann [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill	64,033
Klipsch [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill	46,532
Accounts Payable, Purchase Accounting Adjustments		(1,729)
Goodwill, Purchase Accounting Adjustments		(1,297)
Income Taxes, Purchase Accounting Adjustments		432
Invision [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill	$ 7,373
Trademarks [Member]
Goodwill and Intangible Assets [Line Items]
Royalty Rate for Acquired Intangible Assets	0.50%
Internet Domain Names [Member]
Goodwill and Intangible Assets [Line Items]
Royalty Rate for Acquired Intangible Assets	7.00%
Minimum [Member]
Goodwill and Intangible Assets [Line Items]
Fair Value Inputs, Discount Rate	12.50%
Discount Rate for Acquired Intangible Assets	13.20%
Maximum [Member]
Goodwill and Intangible Assets [Line Items]
Fair Value Inputs, Discount Rate	15.10%
Discount Rate for Acquired Intangible Assets	15.80%