Quarterly Results of Operations (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Selected Quarterly Financial Information [Abstract]                      
Revenue $ 128,388 $ 131,804 $ 134,977 $ 130,647 $ 83,743 $ 59,220 $ 58,749 $ 54,959 $ 525,816 $ 256,671 $ 156,837
Gross profit 19,872 14,664 18,106 17,007 1,416 5,981 4,326 6,986 69,649 18,709 33,328
Income (loss) from continuing operations (10,372) (97,998) (21,665) (4,005) 6,011 (14,159) 5,414 (3,863) (134,040) (6,597) (108)
Income (loss) from discontinued operations (2,700) (95,740) 8,816 (8,627) (1,019) 4,814 5,329   (98,251) 9,124 (22,898)
Net (loss) income attributable to common stockholders $ (13,072) $ (193,738) $ (12,849) $ (12,632) $ 4,992 $ (9,345) $ 10,743 $ (3,863) $ (232,291) $ 2,527 $ (23,006)
Income (loss) per common share from continuing operations :                      
Basic and diluted $ (0.42) $ (3.94) $ (0.89) $ (0.17)         $ (5.47) $ (0.44) $ (0.01)
Basic         $ 0.33 $ (0.96) $ 0.37 $ (0.31)      
Diluted         $ 0.30 $ (0.96) $ 0.36 $ (0.31)      
Income (loss) per common share from discontinued operations:                      
Basic and diluted $ (0.11) $ (3.85) $ 0.36 $ (0.36)              
Basic         $ (0.06) $ 0.33 $ 0.37        
Diluted         $ (0.06) $ 0.31 $ 0.35        
Net (loss) income per common share:                      
Basic and diluted $ (0.53) $ (7.80) $ (0.53) $ (0.53)         $ (9.48) $ 0.17 $ (2.01)
Basic         $ 0.28 $ (0.63) $ 0.74 $ (0.31)      
Diluted         $ 0.25 $ (0.65) $ 0.71 $ (0.31)