Net Sales by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 16,460	$ 18,341
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	9,631	10,190
Markets outside the United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 6,829	$ 8,151