Raw Material Purchases from Major Suppliers (Detail) (Supplier Concentration Risk, USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Concentration Risk [Line Items]
Raw Material Purchases by Supplier	$ 732	$ 2,106	$ 1,223	$ 2,106
% of Total Raw Material Purchases	13.00%	21.00%	10.00%	13.00%
Supplier 1
Concentration Risk [Line Items]
Raw Material Purchases by Supplier	732		1,223
% of Total Raw Material Purchases	13.00%		10.00%
Supplier 2
Concentration Risk [Line Items]
Raw Material Purchases by Supplier		$ 2,106		$ 2,106
% of Total Raw Material Purchases		21.00%		13.00%