Computers, Furniture and Equipment-Net (Details) (USD $)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	$ 12,466,000		$ 12,216,000
Less accumulated depreciation	(8,704,000)		(8,217,000)
Computers, furniture and equipment-net	3,762,000		3,999,000
Depreciation and amortization expense	500,000	500,000
Computers and software
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	10,265,000		10,018,000
Equipment under capital leases
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	2,500,000		2,500,000
Less accumulated depreciation	2,100,000		2,000,000
Furniture and fixtures
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	1,041,000		1,032,000
Leasehold improvements
Computers, furniture and equipment-net
Computers, furniture and equipment-gross	$ 1,160,000		$ 1,166,000

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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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

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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