Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Apr. 30, 2012
Property, Plant and Equipment [Abstract]
Land	$ 726	$ 726
Building and leasehold improvements	7,283	7,283
Furniture and equipment	10,970	10,955
Property, plant and equipment, gross	18,979	18,964
Accumulated depreciation and amortization	(15,178)	(15,110)
Total property and equipment, net	$ 3,801	$ 3,854

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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