Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Jan. 26, 2017	Apr. 04, 2016	Jun. 30, 2017	Jun. 30, 2016
Equity [Abstract]
Preferred stock shares authorized to issue			1,000,000	1,000,000
Preferred stock shares par value (in dollars per share)			$ 0.01	$ 0.01
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Shares sold (in shares)	6,900,000	5,175,000
Price of stock sold (in dollars per share)	$ 33.00	$ 19.25
Consideration received on transaction	$ 215,725	$ 92,788