Property Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Line Items]
Computer equipment and software	$ 322	$ 234
Furniture and fixtures	214	267
Machinery and equipment	679	679
Leasehold improvements	8	8
Property, Plant and Equipment, Gross, Total	1,223	1,188
Less accumulated depreciation and amortization	(965)	(928)
Property, plant and equipment, net	$ 258	$ 260

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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