Sources of Temporary Differences and Carry Forwards, and Their Effect on Net Deferred Tax Asset (Detail) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Feb. 28, 2014
Current deferred tax assets (liabilities):
Uniform capitalization costs	$ 123	$ 159
Inventory reserves	183	41
Accrued liabilities	119	59
Allowance for doubtful accounts	19	15
Other	(10)	(32)
Valuation Allowance	(434)
Net current deferred tax assets		242
Non-current deferred tax assets:
Amortization of intangibles	185	241
Deferred rent	155us-gaap_DeferredTaxAssetsOther	200us-gaap_DeferredTaxAssetsOther
Unrealized loss on investments	1,035
State net operating loss carry-forward	381	351
Federal net operating loss carry-forward	1,908	1,369
Foreign tax credit carry-forward	99	99
Basis difference of property, plant and equipment	97	56
Valuation allowance	(3,860)	(1,556)
Net non-current deferred tax assets		760
Net deferred tax assets		1,002us-gaap_DeferredTaxAssetsLiabilitiesNet
Current asset		242us-gaap_DeferredTaxAssetsNetCurrent
Non-current asset		760us-gaap_DeferredTaxAssetsNetNoncurrent
Net deferred tax assets		$ 1,002us-gaap_DeferredTaxAssetsLiabilitiesNet

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