CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Statement Of Financial Position [Abstract]
Trade receivables, allowance for doubtful accounts (in dollars)	$ 485	$ 513
Preferred stock, shares authorized	2,000	2,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	75,000	75,000
Common stock, shares issued	30,094	29,595
Common stock, shares outstanding	30,094	29,595