Cash and Cash Equivalents (Tables)

6 Months Ended

Jun. 30, 2012

Cash and Cash Equivalents [Abstract]

Cash and cash equivalents

	June 30, 2012		December 31, 2011
Cash on hand	$	162,798	$	133,035
Money market fund		7,873,828		4,230,677
		8,036,626		4,363,712
Certificates of deposit
Maturing in September 2012		5,000,000		—
Maturing in November 2012		5,000,000		—
		10,000,000		—
Total cash and cash equivalents	$	18,036,626	$	4,363,712