Long-lived Assets (Tables)

3 Months Ended

Mar. 31, 2013

Property, Plant and Equipment [Abstract]

Changes in property and equipment of continuing operations for the three months ended March 31, 2013 are as follows:



	Balance at December 31, 2012			Additions		Transfers			Depreciation			Balance at March 31, 2013
Property and equipment in service, gross	$	31,295,376		$	—	$	400,729		$	—		$	31,696,105
Accumulated depreciation	(28,837,522		)						(254,602		)	(29,092,124		)
Construction in progress:
Plant equipment & other	751,789			592,677		(400,729		)				943,737
Total property and equipment, net	$	3,209,643		$	592,677	$	—		$	(254,602	)	$	3,547,718

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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