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		—