FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2012

FAIR VALUE MEASUREMENTS

Schedule of financial assets and liabilities recorded at fair value on a recurring basis

Description	December 31, 2012 Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Money market fund	$	34,210,555	—	$	34,210,555	—
Total assets	$	34,210,555	—	$	34,210,555	—
Liabilities:
2013 Notes	$	7,883,886	—	$	7,883,886	—
Total liabilities	$	7,883,886	—	$	7,883,886	—

Description	December 31, 2011 Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Money market fund	$	55,465,507	—	$	55,465,507	—
Total assets	$	55,465,507	—	$	55,465,507	—
Liabilities:
2013 Notes	17,336,760		—	17,336,760		—
Total liabilities	$	17,336,760	—	$	17,336,760	—