Property and Equipment (Details Textual) (USD $)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Depreciation expense	$ 88,802	$ 90,897
Less: accumulated depreciation and amortization	1,466,762		1,377,960
Property and equipment, net	1,443,526		1,428,323
Leased Equipment [Member]
Depreciation expense	14,700	12,700
Less: accumulated depreciation and amortization	364,900		350,200
Property and equipment, net	112,600		127,300
Capital Lease Obligations [Member]
Capital Lease Obligations	$ 477,500		$ 477,500

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

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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