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Shareholders' Interest ( Schedule Of Earning Per Share) (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
NUMERATOR:                      
Net income (loss) attributable to the Company $ (68,088) $ (114,852) $ (186,631) $ (424,190) $ (309,227) $ (101,855) $ 7,202 $ (203,003) $ (793,761) $ (606,883) $ (424,479)
Less: Participating securities dividends                   2,566 8,456
Less: Income (loss) attributable to the Company - unvested shares                 0 0 0
Net loss attributable to the Company per common share - basic and diluted                 $ (793,761) $ (609,449) $ (432,935)
DENOMINATOR:                      
Weighted average common shares outstanding - basic                 83,941 83,364 82,745
Effect of dilutive securities:                      
Stock options and common stock warrants [1]                 0 0 0
Weighted average common shares outstanding - diluted                 83,941 83,364 82,745
Net loss attributable to the Company per common share:                      
Basic $ (0.81) $ (1.37) $ (2.22) $ (5.06) $ (3.70) $ (1.22) $ 0.09 $ (2.47) $ (9.46) $ (7.31) $ (5.23)
Diluted $ (0.81) $ (1.37) $ (2.22) $ (5.06) $ (3.70) $ (1.22) $ 0.09 $ (2.47) $ (9.46) $ (7.31) $ (5.23)
[1] 6.8 million, 6.4 million and 5.4 million stock options and restricted shares were outstanding at December 31, 2014, 2013 and 2012, respectively, that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive.