Property and Equipment (Property and Equipment) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Leasehold improvements	$ 127	$ 112
Computer and office equipment	8,993	8,989
Furniture and fixtures	38	38
Property and equipment, gross	9,158	9,139
Less accumulated depreciation and amortization	(9,131)	(9,117)
Construction in progress	32	0
Property and equipment, net	$ 59	$ 22

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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