Common Stock and Loss Per Share - Additional Information (Detail)		12 Months Ended
	May 06, 2015 USD ($)	Dec. 31, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($) $ / shares shares	Nov. 11, 2016	Jun. 29, 2015 $ / shares shares
Class of Stock [Line Items]
Amount authorized for repurchase | $	$ 50,000,000.0
Repurchase period inception date	May 11, 2015
Repurchase period end date	May 31, 2016
Shares of common stock repurchased | shares			2,382,733
Aggregate cost of repurchased shares | $			$ 28,100,000
Average cost per share of repurchased shares			$ 11.78
Dividend date declared			Jun. 29, 2015
Dividend date payable			Jul. 09, 2015
Dividend date of record			Jul. 09, 2015
Preferred stock, par value (in dollars per share)		$ 0.01	$ 0.01
Preferred share repurchase rights trigger percentage		4.99%
Aggregate restricted net assets of subsidiaries | $		$ 600,600,000
Convertible Notes [Member]
Class of Stock [Line Items]
Stock price threshold for antidilution		$ 58.80
Certain Stockholders [Member]
Class of Stock [Line Items]
Preferred share repurchase rights trigger percentage				25.00%
Junior Participating Preferred Stock [Member]
Class of Stock [Line Items]
Number of preferred stock purchase rights for each outstanding share of common stock					1
Amount of fully paid non-assessable share the registered holder is entitled to purchase | shares					0.001
Preferred stock, par value (in dollars per share)					$ 0.01
Preferred stock, redemption price per one-onethousandth share					$ 74.16