Condensed Statements of Income (Loss) (Unaudited) (Parenthetical)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
Interests outstanding	46,280.3	46,280.3	46,280.3	46,280.3