Commitments and Contingencies (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Lease Commitment [Line Items]
Operating Leases, Rent Expense	$ 435,400	$ 528,900	$ 848,200	$ 941,500
Operating Leases, Future Minimum Payments Due, Current	685,700		685,700
Operating Leases, Future Minimum Payments, Due in Two Years	992,200		992,200
Operating Leases, Future Minimum Payments, Due in Three Years	624,200		624,200
Operating Leases, Future Minimum Payments, Due in Four Years	566,100		566,100
Operating Leases, Future Minimum Payments, Due in Five Years	563,900		563,900
Operating Leases, Future Minimum Payments, Due Thereafter	293,200		293,200
Operating Leases, Future Minimum Payments Due	$ 3,725,300		$ 3,725,300