CONDENSED STATEMENTS OF INCOME (LOSS) (Parenthetical)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Interests outstanding	46,280.3	46,280.3	46,280.3	46,280.3