Organization and Summary of Significant Accounting Policies (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of basic and diluted net income per share
Net income for the year	$ 4,198,580	$ 5,760,543
Weighted average common stock outstanding - basic	2,538,246	1,962,146
Effect of dilutive securities:
Series A convertible preferred stock	103,149	488,599
Warrants	7,648	50,060
Weighted average common stock outstanding - diluted	2,649,043	2,500,805
Net income per common share - basic	$ 1.65	$ 2.94
Net income per common share - diluted	$ 1.58	$ 2.30