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Property, Plant, and Equipment (Details) (USD $)	12 Months Ended
Property, Plant, and Equipment (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, plant, and equipment
Property, plant, and equipment	$ 59,569,202	$ 47,635,907
Depreciation and amortization expense	2,764,627	2,585,672	2,928,285
Land and improvements
Property, plant, and equipment
Property, plant, and equipment	839,906	839,906
Buildings and improvements
Property, plant, and equipment
Property, plant, and equipment	8,772,943	6,959,641
Leasehold improvements
Property, plant, and equipment
Property, plant, and equipment	3,857,155	3,071,096
Equipment
Property, plant, and equipment
Property, plant, and equipment	39,045,723	32,612,522
Furniture, computer equipment and software
Property, plant, and equipment
Property, plant, and equipment	4,202,679	2,540,055
Construction in progress-equipment
Property, plant, and equipment
Property, plant, and equipment	$ 2,850,796	$ 1,612,687

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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- Definition

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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