Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

Our significant financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2012 and 2011 were as follows:

	December 31, 2012
	Level 1		Level 2		Level 3		Total
Cash equivalents - money market accounts	$	34,264,268	$	-	$	-	$	34,264,268
	December 31, 2011
	Level 1		Level 2		Level 3		Total
Cash equivalents - money market accounts	$	20,263,766	$	-	$	-	$	20,263,766

Allowance for Doubtful Accounts

	December 31,
	2012			2011
Balance, beginning of the year	$	334,473		$	30,000
Amounts provided		138,339			306,520
Amounts written off		(135,353	)		(2,047	)
Balance, end of the year	$	337,459		$	334,473