Commitments and Contingencies (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Leases, Future Minimum Payments Due [Abstract]
2013	$ 852,200
2014	878,800
2015	713,700
2016	563,900
Thereafter	293,200
Total minimum lease payments	3,301,800
Operating Leases, Rent Expense	$ 300,000	$ 400,000