Registration of securities issued in business combination transactions

Earnings Per Share (EPS) - Summary of Earnings Per Share (EPS) (Detail)

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Earnings Per Share (EPS) - Summary of Earnings Per Share (EPS) (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2014
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
Earnings Per Share [Abstract]                        
Net income $ (12,549) $ 10,172 $ 7,970 $ 8,281 $ 592 $ (20,098) $ 10,936 $ 20,083 $ 26,392 $ 27,015 $ 37,313 $ (50,451)
Basic EPS (in shares) 120,368,650       118,867,678         119,284,468 117,721,135 116,081,590
Basic EPS (in dollars per share) $ (0.10) $ 0.08 [1] $ 0.07 [1] $ 0.07 [1] $ 0.00 [1] $ (0.17) [1] $ 0.09 [1] $ 0.17 [1] $ 0.23 [1] $ 0.23 [1] $ 0.32 [1] $ (0.43)
Stock options and restricted stock (in shares) 0       1,204,896         1,940,082 1,372,455 0
Stock options and restricted stock (in dollars per share) $ 0 $ (0.01)     $ 0 $ (0.01)       $ (0.01) $ (0.01) $ 0.00
Diluted EPS (in shares) 120,368,650       120,072,574         121,224,550 119,093,590 116,081,590
Diluted EPS (in dollars per share) $ (0.10) $ 0.08 [1] $ 0.07 [1] $ 0.07 [1] $ 0.00 [1] $ (0.17) [1] $ 0.09 [1] $ 0.17 [1] $ 0.22 [1] $ 0.22 [1] $ 0.31 [1] $ (0.43)
[1] As a result of shares issued during the year, earnings per share for each of the year's four quarters, which are based on weighted average shares outstanding during each quarter, may not equal the annual earnings per share, which is based on the weighted average shares outstanding during the year. Additionally, as a result of rounding to the thousands, revenues, operating gross margin, operating income, and net income (loss) attributable to controlling interest may not equal the 2013 year to date results.