Net Sales by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 17,155	$ 16,460
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	9,488	9,631
Markets outside the United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 7,667	$ 6,829