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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Basic and Diluted Earnings Per Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Earnings Per Share [Line Items]        
Net Income (Loss) From Continuing Operations $ (21,531) $ 16,710 $ (46,048) $ 18,127
(Income) Loss Allocable to Unvested Stock Grants 697 (601) 1,495 (653)
Basic Net Income (Loss) From Continuing Operations Attributable to Common Stock (20,834) 16,109 (44,553) 17,474
Effect of Dilutive Securities: Stock Options            
Effect of Dilutive Securities: Performance Stock Units            
Diluted Net Income (Loss) From Continuing Operations Attributable to Common Stock (20,834) 16,109 (44,553) 17,474
Net Income (Loss) From Discontinued Operations 151,236 (9,545) 148,609 (9,587)
(Income) Loss Allocable to Unvested Stock Grants (4,893) 343 (4,825) 345
Basic Net Income (Loss) From Discontinued Operations Attributable to Common Stock 146,343 (9,202) 143,784 (9,242)
Effect of Dilutive Securities: Stock Options            
Effect of Dilutive Securities: Performance Stock Units            
Diluted Net Income (Loss) From Discontinued Operations Attributable to Common Stock $ 146,343 $ (9,202) $ 143,784 $ (9,242)
Basic Net Income (Loss) From Continuing Operations Attributable to Common Stock, Shares 46,754 46,426 46,742 46,399
Effect of Dilutive Securities: Stock Options, Shares            
Effect of Dilutive Securities: Performance Stock Units, Shares            
Diluted Net Income (Loss) From Continuing Operations Attributable to Common Stock, Shares 46,754 46,426 46,742 46,399
Basic Net Income (Loss) From Discontinued Operations Attributable to Common Stock, Shares 46,754 46,426 46,742 46,399
Effect of Dilutive Securities: Stock Options, Shares            
Effect of Dilutive Securities: Performance Stock Units, Shares            
Diluted Net Income (Loss) From Discontinued Operations Attributable to Common Stock, Shares 46,754 46,426 46,742 46,399
Basic Net Income (Loss) From Continuing Operations Attributable to Common Stock, Per share $ (0.45) $ 0.35 $ (0.95) $ 0.38
Diluted Net Income (Loss) From Continuing Operations Attributable to Common Stock, Per share $ (0.45) $ 0.35 $ (0.95) $ 0.38
Basic Net Income (Loss) From Discontinued Operations Attributable to Common Stock, Per share $ 3.13 $ (0.20) $ 3.07 $ (0.20)
Diluted Net Income (Loss) From Discontinued Operations Attributable to Common Stock, Per share $ 3.13 $ (0.20) $ 3.07 $ (0.20)