Property and Equipment (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 203,206	$ 192,244
Accumulated depreciation	(181,498)	(164,418)
Net property and equipment	21,708	27,826
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,279	7,279
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 195,927	$ 184,965

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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