Dilutive common-equivalent shares (Details)	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Dilutive common-equivalent shares
Anti dilutive common-equivalent shares outstanding during each period	1,650,487	1,650,487	1,224,500	1,224,500