Investment - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2012
Schedule of Equity Method Investments [Line Items]
Total carrying value of investment	$ 10,977,000	$ 10,528,000	$ 10,977,000	$ 10,528,000
Pro-rata share of earnings			822,000	755,000
Guangdong Fuxin Electronic Technology
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	20.20%		20.20%
Total carrying value of investment	11,000,000		11,000,000		10,700,000
Pro-rata share of earnings	200,000	800,000	200,000	900,000
Dividend from equity investment			$ 500,000	$ 500,000