Equipment Furniture and Leasehold Improvements (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Equipment, furniture, and leasehold improvements
Total	$ 5,287	$ 5,104
Less: accumulated depreciation and amortization	(4,528)	(4,067)
Equipment, furniture and leasehold improvements, net	759	1,037
Computer equipment and software [Member]
Equipment, furniture, and leasehold improvements
Total	2,964	2,804
Leasehold improvements [Member]
Equipment, furniture, and leasehold improvements
Total	958	929
Office furniture and equipment [Member]
Equipment, furniture, and leasehold improvements
Total	$ 1,365	$ 1,371

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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