Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Accounts receivable, allowance	$ 341	$ 332
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	2,000	2,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	18,000	18,000
Common stock, shares issued (in shares)	12,328	12,313
Common stock, shares outstanding (in shares)	12,323	12,308
Treasury stock, shares (in shares)	5	5