Summary of Significant Accounting Policies (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013 Segment	Sep. 30, 2012	Jun. 30, 2013
Summary Of Significant Accounting Policies
Foreign currency transaction gain (loss), realized	$ (147,000)	$ (55,000)
Derivative instruments, gain (loss) realized in income, net	(149,000)
Money back guarantee period	30 days
Percent of restocking fee	10.00%
Reserve for sales returns	1,041,000		648,000
Research and development	307,000	514,000
Income tax expenses	1,852,000	2,701,000
Effective tax rate	35.60%
Statutory tax rate	35.00%
Common shares issuable upon exercise of warrants or rights	0.7	0.5
Number of geographic segments	2
JAPAN
Summary Of Significant Accounting Policies
Long-lived assets	2,900,000		3,000,000
UNITED STATES
Summary Of Significant Accounting Policies
Long-lived assets	5,000,000		4,800,000
Cash Accounts Held Primarily At Financial Institution
Summary Of Significant Accounting Policies
Concentration of credit risk	15,400,000
Investment Management Account At Another Financial Institution
Summary Of Significant Accounting Policies
Concentration of credit risk	$ 12,500,000