Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Measurements [Abstract]

Assets And Liabilities Measure At Fair Value On A Recurring Basis By Level

	Fair Value Measurement Using
	Total		Quoted Prices in Active Markets for Identical Instruments (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Assets at June 30, 2013:
Cash equivalents	$	21,663	21,633	—	—
Derivative asset		79	—	—	79
Total assets at fair value	$	21,742	21,633	—	79
Liabilities at June 30, 2013:
Warrants issued December 29, 2008	$	6,999	—	—	6,999
Warrants issued May 10, 2012		1,360,107	—	—	1,360,107
Derivative liability		101,936	—	—	101,936
Total liabilities at fair value:	$	1,469,042	—	—	1,469,042
Assets at December 31, 2012:
Cash equivalents	$	256,702	256,702	—	—
Derivative asset		1,736	—	—	1,736
Total assets at fair value	$	258,438	256,702	—	1,736
Liabilities at December 31, 2012:
Warrants issued December 29, 2008	$	71,581	—	—	71,581
Warrants issued May 10, 2012		2,347,902	—	—	2,347,902
Derivative liability		548,865	—	—	548,865
Total liabilities at fair value:	$	2,968,348	—	—	2,968,348

Summary Of Changes In The Fair Value Of The Company's Level 3 Financial Asset And Liabilities

	Derivative Asset	Total Assets	Warrants issued December 29, 2008	Warrants issued May 2012	Derivative Liability	Total Liabilities
Balance at beginning of period	$       1,736	$       1,736	$                71,581	$           2,347,902	$      548,865	$   2,968,348
Settlements	-	-	-	-	(1,631)	($1,631)
Revaluation	(1,657)	(1,657)	(64,582)	(987,795)	(445,298)	(1,497,675)
Balance at end of period	$            79	$            79	$                  6,999	$           1,360,107	$      101,936	$   1,469,042