Condensed Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Jun. 30, 2013
Receivable, allowance (in Dollars)	$ 75	$ 68
Preferred stock, par value (in Dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in Shares)	5,000	5,000
Preferred stock, shares issued (in Shares)	0	0
Common stock, par value (in Dollars per share)	$ 0	$ 0
Common stock, shares authorized (in Shares)	50,000	50,000
Common stock, shares issued (in Shares)	12,253	12,253
Common stock, shares outstanding (in Shares)	12,253	12,253
Manufacturing Inventories [Member]
Receivable, allowance (in Dollars)	$ 292	$ 203