Property and Equipment (Narrative) (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]
Depreciation expense			$ 288,939	$ 305,250
Accumulated depreciation	1,666,896		1,666,896		1,377,960
Capital lease assets, net	83,200		83,200		127,300
Leased equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation expense	14,700	17,500	44,100	52,800
Capital lease obligations	477,500		477,500		477,500
Accumulated depreciation	394,300		394,300		350,200
Capital leases [Member]
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ 130,700		$ 130,700