Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2018	Jun. 30, 2017
Preferred stock, par value (per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A Common Stock
Common stock, par value (per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	20,509,103	17,937,687
Common stock, shares, outstanding	20,509,103	17,937,687
Class B Common Stock
Common stock, par value (per share)	$ 0.01	$ 0.01
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	17	19
Common stock, shares, outstanding	17	19