Organization and Summary of Significant Accounting Policies (Details 1) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Reconciliation of basic and diluted net income per share
Net income available to common stockholders for basic and diluted net income per share of common stock	$ 1,071,370	$ 1,169,959	$ 1,374,165	$ 3,835,119
Weighted average common stock outstanding - basic	2,572,753	1,919,660	2,370,138	1,906,203
Effect of dilutive securities:
Series A convertible preferred stock	58,974	532,403	207,431	531,410
Warrants	29,256	57,694	15,295	100,148
Weighted average common stock outstanding – diluted	2,660,983	2,509,757	2,592,864	2,537,761
Net income per common share - basic	$ 0.42	$ 0.61	$ 0.58	$ 2.01
Net income per common share - diluted	$ 0.40	$ 0.47	$ 0.53	$ 1.51