Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2013	Feb. 29, 2012
Deferred income tax assets:
Employee related items	$ 3,179	$ 2,692
Inventories	717	715
Accrued warranty	782	629
Accounts receivable	377	337
Net operating loss carry forward	1,660	2,412
Other	901	870
Total deferred income tax assets	7,616	7,655
Deferred income tax liabilities:
Depreciation methods and property basis differences	(18,352)	(14,242)
Other assets and tax-deductible goodwill	(18,051)	(16,231)
Total deferred income tax liabilities	(36,403)	(30,473)
Net deferred income tax liabilities	$ (28,787)	$ (22,818)