Property and Equipment (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Property, equipment, and leasehold improvements, at cost:
Equipment	$ 13,754	$ 13,754
Machinery and equipment	2,611,933	1,618,701
Purchased software	129,753	56,404
Furniture and fixtures	13,090	14,040
Subtotal - property and equipment, at cost	2,768,530	1,702,899
Less accumulated depreciation	(763,315)	(655,763)
Net property and leasehold improvements	$ 2,005,215	$ 1,047,136

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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