Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2017	Jun. 30, 2016
Stockholders’ equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
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	100,000,000	100,000,000
Common stock, shares issued	46,908,380	46,340,214
Common stock, shares outstanding	45,124,719	44,560,896
Treasury stock, shares	1,783,661	1,779,318