Loss per Share - Additional Information (Detail) - $ / shares	Mar. 05, 2015	Jun. 30, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Beneficial ownership percentage of acquiring person	12.50%
Beneficial ownership percentage of passive institutional investor	20.00%
Date on which rights expire	Sep. 05, 2016
Percentage of ownership in outstanding common stock	50.00%
Minimum [Member]
Class of Stock [Line Items]
Percentage of assets or earnings power sold	50.00%
Series A Junior Participating Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, par value	$ 0.01
Purchase price of preferred Stock	12
Board of Directors [Member]
Class of Stock [Line Items]
Redemption price per right	$ 0.001