Income Taxes Schedule of Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Deferred Tax Assets, Accounts Receivable	$ 575	$ 419
Inventory	2,516	2,657
Property, plant and equipment	286	447
Accruals and reserves	2,296	3,231
Deferred compensation	2,563	1,298
Warranty reserves	3,050	3,811
Deferred Tax Assets, Unrealized Gains (Losses)	2,944	1,696
Foreign and state operating losses	3,616	3,685
Foreign tax credits	5,439	5,778
Other tax credits	499	488
Deferred tax assets before valuation allowance	23,784	23,510
Less: valuation allowance	(10,347)	(10,413)
Net deferred tax assets	13,437	13,097
Intangible assets	(42,185)	(50,723)
Prepaid expenses	(1,827)	(1,378)
Deferred financing fees	(579)	(832)
Total deferred tax liabilities	(44,591)	(52,933)
Deferred Tax Liabilities, Net	(31,154)	(39,836)
Valuation Allowance, Deferred Tax Asset, Change in Amount	66
Deferred Tax Liabilities, Undistributed Foreign Earnings	14,908
Hirschmann [Member]
Deferred Tax Liabilities, Net	$ (10,701)