Organization and Summary of Significant Accounting Policies (Details 1) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 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	$ 2,355,102	$ 1,134,990	$ 3,729,267	$ 4,970,109
Weighted average common stock outstanding - basic	2,667,017	1,997,674	2,469,818	1,937,028
Effect of dilutive securities:
Series A convertible preferred stock		464,485	137,783	508,857
Warrants			10,197	66,752
Weighted average common stock outstanding - diluted	2,667,017	2,462,159	2,617,798	2,512,637
Net income per common share - basic	$ 0.88	$ 0.57	$ 1.51	$ 2.57
Net income per common share - diluted	$ 0.88	$ 0.46	$ 1.42	$ 1.98