Segment and Major Customer Information (Detail)	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended
	Dec. 31, 2011 Customer One [Member]	Dec. 31, 2012 Customer One [Member]	Dec. 31, 2011 Customer One [Member]	Dec. 31, 2011 Customer Two [Member]	Dec. 31, 2011 Customer Two [Member]	Dec. 31, 2012 No Customer [Member]
Entity-Wide Revenue, Major Customer, Percentage	14.00%	10.00%	12.00%	11.00%	11.00%	10.00%