Property and Equipment (Detail) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Property, equipment, and leasehold improvements, at cost:
Equipment	$ 13,754	$ 13,754
Machinery and equipment	2,623,315	2,611,933
Purchased software	133,993	129,753
Furniture and fixtures	13,090	13,090
Subtotal - property and equipment, at cost	2,784,152	2,768,530
Less accumulated depreciation	(787,691)	(763,315)
Net property and leasehold improvements	$ 1,996,461	$ 2,005,215

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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