Consolidating Statements of Comprehensive Income (Loss) (Detail) (USD $)
In Thousands, 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
Condensed Income Statements, Captions [Line Items]                      
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)
Add back: income attributable to noncontrolling interest                     (1,456)
Net income (loss)                   2,527 (24,462)
Other comprehensive loss, net of tax:                      
Foreign currency translation gain (loss)                     21
Reclassification of net loss from sales of available-for-sale securities included in earnings                   (8)  
Unrealized loss on available-for-sale securities                     (112)
Total other comprehensive income (loss), net of tax                   (8) (91)
Comprehensive (loss) income, net of tax                 (232,291) 2,519 (24,553)
Parent
                      
Condensed Income Statements, Captions [Line Items]                      
Net (loss) income attributable to common stockholders                 (232,291) 2,527 (23,006)
Add back: income attributable to noncontrolling interest                     (1,456)
Net income (loss)                   2,527 (24,462)
Other comprehensive loss, net of tax:                      
Foreign currency translation gain (loss)                     21
Reclassification of net loss from sales of available-for-sale securities included in earnings                   (8)  
Unrealized loss on available-for-sale securities                     (112)
Total other comprehensive income (loss), net of tax                   (8) (91)
Comprehensive (loss) income, net of tax                 (232,291) 2,519 (24,553)
Guarantor Subsidiaries
                      
Condensed Income Statements, Captions [Line Items]                      
Net (loss) income attributable to common stockholders                 (163,732) (5,859) 9,482
Net income (loss)                   (5,859) 9,482
Other comprehensive loss, net of tax:                      
Comprehensive (loss) income, net of tax                 (163,732) (5,859) 9,482
Non-Guarantor Subsidiaries
                      
Condensed Income Statements, Captions [Line Items]                      
Net (loss) income attributable to common stockholders                 2,529 158 (22,898)
Add back: income attributable to noncontrolling interest                     (1,456)
Net income (loss)                   158 (24,354)
Other comprehensive loss, net of tax:                      
Comprehensive (loss) income, net of tax                 2,529 158 (24,354)
Consolidation, Eliminations
                      
Condensed Income Statements, Captions [Line Items]                      
Net (loss) income attributable to common stockholders                 161,203 5,701 13,416
Add back: income attributable to noncontrolling interest                     1,456
Net income (loss)                   5,701 14,872
Other comprehensive loss, net of tax:                      
Comprehensive (loss) income, net of tax                 $ 161,203 $ 5,701 $ 14,872