(Loss) Earnings Per Share ("EPS") (Computation of Basic and Diluted Earnings per Common Share) (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Denominator:                      
Basic weighted average common shares outstanding                 233,415,441 226,142,456 183,642,883
Basic (loss) income from continuing operations per share — attributable to common shares $ (0.02) $ (2.32) $ 0.05 $ (0.05) $ 0.02 $ 0.01 $ 0.06 $ (0.04) $ (2.34) $ 0.05 $ 0.76
Denominator:                      
Basic weighted average common shares outstanding                 233,415,441 226,142,456 183,642,883
Diluted weighted average shares outstanding                 233,415,441 228,963,158 186,844,575
Diluted (loss) income from continuing operations per share — attributable to common shares $ (0.02) $ (2.32) $ 0.05 $ (0.05) $ 0.02 $ 0.01 $ 0.06 $ (0.04) $ (2.34) $ 0.05 $ 0.75
Potentially dilutive equivalent shares outstanding excluded from the computation of diluted (loss) income per share                 1,300,000    
Basic Share                      
Basic (Loss) Earnings Per Share                      
Undistributed net (loss) income from continuing operations                 $ (546,494) $ 11,769 $ 43,613
Less:                      
Dividends declared on redeemable preferred stock                 0 0 9,395
Accretion of redeemable preferred stock                 0 0 2,474
Basic undistributed net (loss) income from continuing operations — attributable to common shares                 $ (546,494) $ 11,399 $ 26,969
Denominator:                      
Basic weighted average common shares outstanding                 233,415,000 226,142,000 183,643,000
Basic (loss) income from continuing operations per share — attributable to common shares                 $ (2.34) $ 0.05 $ 0.15
Denominator:                      
Basic weighted average common shares outstanding                 233,415,000 226,142,000 183,643,000
Basic Share | Warrant                      
Less:                      
Participation rights of the Company Warrants in undistributed earnings                 $ 0 $ 358 $ 4,712
Basic Share | Restricted Stock                      
Less:                      
Participation rights of unvested restricted stock in undistributed earnings                 0 12 63
Diluted Share                      
Basic (Loss) Earnings Per Share                      
Undistributed net (loss) income from continuing operations                 (546,494) 11,769 43,613
Less:                      
Dividends declared on redeemable preferred stock                 0 0 9,395
Accretion of redeemable preferred stock                 0 0 2,474
Basic undistributed net (loss) income from continuing operations — attributable to common shares                 $ (546,494) $ 11,403 $ 27,097
Denominator:                      
Basic weighted average common shares outstanding                 233,415,000 226,142,000 183,643,000
Denominator:                      
Basic weighted average common shares outstanding                 233,415,000 226,142,000 183,643,000
Effect of dilutive options and warrants (shares)                 0 2,821,000 3,202,000
Diluted weighted average shares outstanding                 233,415,000 228,963,000 186,845,000
Diluted (loss) income from continuing operations per share — attributable to common shares                 $ (2.34) $ 0.05 $ 0.15
Diluted Share | Warrant                      
Less:                      
Participation rights of the Company Warrants in undistributed earnings                 $ 0 $ 354 $ 4,584
Diluted Share | Restricted Stock                      
Less:                      
Participation rights of unvested restricted stock in undistributed earnings                 $ 0 $ 12 $ 63