Annual report pursuant to Section 13 and 15(d)

Earnings per Share - Reconciliation of Components Used to Derive Basic and Diluted EPS (Detail)

v2.4.0.8
Earnings per Share - Reconciliation of Components Used to Derive Basic and Diluted EPS (Detail) (USD $)
In Thousands, except 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
Earnings Per Share [Abstract]                      
Net Income (Numerator) $ 10,027 $ 10,250 $ 9,519 $ 10,110 $ 13,979 $ 13,279 $ 55,775 $ 7,341 $ 39,906 $ 90,374 $ 28,147
Weighted-Average Shares, Basic EPS                 31,598,913 31,475,510 20,403,549
Weighted-Average Shares, Effect of dilutive securities - options, warrants and unvested restricted stock                 97,607 40,072 19,435
Weighted-Average Shares, Diluted EPS                 31,696,520 31,515,582 20,422,984
Per Share Amount, Basic EPS $ 0.32 $ 0.32 $ 0.30 $ 0.32 $ 0.44 $ 0.42 $ 1.77 $ 0.23 $ 1.26 $ 2.87 $ 1.38
Per Share Amount, Effect of dilutive securities - options, warrants and unvested restricted Stock                         
Per Share Amount, Diluted EPS $ 0.31 $ 0.32 $ 0.30 $ 0.32 $ 0.44 $ 0.42 $ 1.77 $ 0.23 $ 1.26 $ 2.87 $ 1.38