Property, Plant and Equipment (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 38,597,862		$ 38,614,905
Less: Accumulated depreciation and amortization	(19,310,613)		(17,850,688)
Net property, plant and equipment	19,287,249		20,764,217
Depreciation expense	1,467,746	1,533,629
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	5,820,509		5,820,509
Furniture, fixtures, computer hardware and computer software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	465,391		461,491
Manufacturing machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 32,311,962		$ 32,332,905