Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Allowance for doubtful accounts	$ 555	$ 487
Undesignated capital stock, no par (in dollars per share)	$ 0	$ 0
Undesignated capital stock, shares authorized (in shares)	5,000,000	5,000,000
Undesignated capital stock, shares issued (in shares)	0	0
Undesignated capital stock, shares outstanding (in shares)	0	0
Common stock authorized (in shares)	100,000,000	100,000,000
Common stock issued (in shares)	37,253,771	37,152,979
Common stock outstanding (in shares)	37,253,771	37,152,979
Common stock par value (in dollars per share)	$ 0.01	$ 0.01