Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2015	Jun. 30, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	2,500,000	2,500,000
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	$ 0
Common stock, shares outstanding (in shares)	20,743,973	19,544,794
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	21,864,548	19,856,454
Treasury stock, shares at cost (in shares)	1,120,575	311,660