Property and Equipment (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 10,495,558		$ 10,495,558		$ 11,261,906
Less: accumulated depreciation and amortization	(9,192,279)		(9,192,279)		(9,151,135)
Total	1,303,279		1,303,279		2,110,771
Depreciation expense	409,685	694,143	1,619,719	1,829,715
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	67,341		67,341		421,425
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,503,838		2,503,838		2,473,813
Software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,857,476		7,857,476		8,018,509
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 66,903		$ 66,903		$ 348,159