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Property and Equipment (Details Textual) (USD $)	12 Months Ended
Property and Equipment (Details Textual) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Depreciation of property and equipment	$ 3,183,000	$ 3,346,000	$ 4,696,000
Property and equipment, net	18,238,000	19,383,000
Accumulated Amortization Of Leased Asset	211,000	173,000
Depreciation	44,000	56,000	47,000
Capital Lease Asset [Member]
Property and equipment, net	$ 507,000	$ 509,000

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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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