Property And Equipment (Schedule Of Property And Equipment) (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Property And Equipment [Abstract]
Equipment	$ 8,762,041	$ 8,762,041
Equipment held for lease	303,412	303,412
Leasehold improvements	2,328,381	2,328,381
Gross property and equipment	11,393,834	11,393,834
Less: Accumulated depreciation	(9,515,081)	(9,251,911)
Net property and equipment	$ 1,878,753	$ 2,141,923

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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- Definition

The gross amount of lessor property subject to or available for lease as of the balance sheet date.

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