Annual report pursuant to Section 13 and 15(d)

Earnings (Loss) Per Share (Details)

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Earnings (Loss) Per Share (Details) (USD $)
Share data 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
Basic and Diluted (Loss)/Earnings Per Common Share                      
Basic weighted average number of shares outstanding                 36,105 34,057 32,382
Effect of dilutive securities:                      
Convertible debt                 2,176 [1] 612 [1]  
Stock options and unvested restricted stock                 520 [2] 503 [2] 0 [2]
Diluted average shares outstanding                 38,801 35,172 32,382
Net earnings/(loss) as reported $ 46,089,000 $ 38,191,000 $ 28,143,000 $ 12,041,000 $ 95,128,000 [3] $ 6,784,000 [3] $ 8,005,000 [3] $ (4,754,000) [3] $ 124,464,000 $ 105,163,000 $ (21,106,000)
Interest attributable to Convertible Senior Notes, net of income taxes                 1,454,000 418,000 0
Net Income/(Loss) for earnings/(loss) per share                 $ 125,918,000 $ 105,581,000 $ (21,106,000)
Basic earnings/(loss) per share (in dollars per share) $ 1.27 [4] $ 1.05 [4] $ 0.78 [4] $ 0.34 [4] $ 2.67 [4] $ 0.19 [4] $ 0.24 [4] $ (0.15) [4] $ 3.45 $ 3.09 $ (0.65)
Diluted earnings/(loss) per share (in dollars per share) $ 1.19 [4] $ 0.99 [4] $ 0.74 [4] $ 0.32 [4] $ 2.49 [4] $ 0.19 [4] $ 0.24 [4] $ (0.15) [4] $ 3.25 [1],[2] $ 3.00 [1],[2] $ (0.65) [1],[2]
Antidilutive stock options not included in the calculation of diluted earnings per share                 7 256 1,731
[1] In accordance with ASC 260-10, Earnings Per Share, ("ASC 260-10") we calculate the dilutive effect of convertible securities using the "if-converted" method.
[2] For periods with a net loss, no options or non-vested shares are included in the dilution calculation as all options and non-vested shares outstanding are considered anti-dilutive.
[3] (3)In the fourth quarter of 2012, we reversed $79.9 million of our deferred tax asset valuation reserve and recorded an $8.4 million tax expense.
[4] (1)Due to the computation of earnings/(loss) per share, the sum of the quarterly amounts may not equal the full-year results.