Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Property and Equipment
Property and equipment, gross	$ 857	$ 817
Less accumulated depreciation and amortization	(718)	(650)
Net Property Plant and Equipment	139	167
Furniture and fixtures
Property and Equipment
Estimated Useful Life	5 years
Property and equipment, gross	68	66
Computer equipment and software
Property and Equipment
Estimated Useful Life	3 years
Property and equipment, gross	284	254
Leasehold improvements
Property and Equipment
Property and equipment, gross	$ 505	$ 497

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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