Organization and Summary of Significant Accounting Policies (Details 2) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
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	$ 1,226,570	$ 2,217,904	$ 2,469,004	$ 4,614,262
Weighted average common stock outstanding - basic and diluted	3,939,986	3,632,222	3,937,333	3,568,219
Net income per common share - basic and diluted	$ 0.31	$ 0.61	$ 0.63	$ 1.29