Summary of Significant Accounting Policies (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2014 Segment	Sep. 30, 2013	Jun. 30, 2014
Summary Of Significant Accounting Policies
Foreign currency transaction gain (loss), realized	$ (100,000)
Derivative instruments, gain (loss) realized in income, net	300,000
Bad debt expenses	0	0
Inventory valuation reserves	700,000		700,000
Money back guarantee period	30 days
Percentage of products can be returned for a full refund by terminated distributors	30.00%
Percent of restocking fee	10.00%
Reserve for sales returns	100,000		600,000
Research and development	500,000	300,000
Income tax expenses	2,444,000	1,852,000
Effective tax rate	34.10%
Statutory tax rate	35.00%
Common shares issuable upon exercise of warrants or rights	0.6	0.7
Number of geographic segments	2
JAPAN
Summary Of Significant Accounting Policies
Long-lived assets	2,000,000		2,300,000
UNITED STATES
Summary Of Significant Accounting Policies
Long-lived assets	8,800,000		9,800,000
Cash Accounts Held Primarily At Financial Institution
Summary Of Significant Accounting Policies
Concentration of credit risk	18,900,000
Cash Accounts Held at Other Financial Institutions
Summary Of Significant Accounting Policies
Concentration of credit risk	$ 3,200,000