Commitments and Contingencies-Leases (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 217,000	$ 230,000	$ 241,000
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2013	168,913
2014	102,878
2015	73,111
2016	72,802
2017	59,382
Total future minimum payments due	$ 477,086