Loss per Share - Additional Information (Detail) (USD $)	0 Months Ended
	Mar. 05, 2015	Mar. 31, 2015	Mar. 05, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Common stock, par value	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Beneficial ownership percentage	10.00%		10.00%
Common stock dividend description	A dividend of one preferred stock purchase right (a "Right" and collectively, the "Rights") for each share of the Company's common stock
Date on which rights expire	Mar. 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%
Passive Institutional Investor [Member]
Class of Stock [Line Items]
Beneficial ownership percentage	20.00%		20.00%
Board of Directors [Member]
Class of Stock [Line Items]
Redemption price per right	$ 0.001
Series A Junior Participating Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, par value	$ 0.01		$ 0.01
Purchase price of preferred Stock	$ 24		$ 24
Number of shares entitle to purchase on each right, once exercisable description	Each Right, once exercisable, will entitle the registered holder to purchase from the Company one one-thousandth of a share of Series A Junior Participating Preferred Stock