Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Summary of Significant Accounting Policies [Abstract]

Schedule of Share-based Compensation Expense

Share-based compensation expense for the three months ended June 30, 2013 and 2012 was:

	Three months ended June 30,
	2013		2012
Research and development	$	73,859	$	127,076
General and administrative		250,149		384,965
Total share-based compensation expense	$	324,008	$	512,041

Share-based compensation expense for the six months ended June 30, 2013 and 2012 was:

	Six months ended June 30,
	2013		2012
Research and development	$	162,493	$	244,143
General and administrative		490,096		816,562
Total share-based compensation expense	$	652,589	$	1,060,705