Annual report pursuant to Section 13 and 15(d)

Earnings (Loss) Per Share (Details)

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Earnings (Loss) Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Basic and Diluted (Loss)/Earnings Per Common Share                      
Basic weighted average number of shares outstanding                 34,057 32,382 32,060
Effect of dilutive securities:                      
Convertible debt                 612 [1]    
Stock options and unvested restricted stock                 503 [2] 0 [2] 262 [2]
Diluted average shares outstanding                 35,172 32,382 32,322
Net income/(loss) as reported $ 95,128 [3] $ 6,784 [3] $ 8,005 [3] $ (4,754) [3] $ (11,774) $ (3,235) $ 562 $ (6,659) $ 105,163 $ (21,106) $ 7,150
Interest attributable to Convertible Senior Notes, net of income taxes                 418 0 0
Net Income/(Loss) for earnings/(loss) per share                 $ 105,581 $ (21,106) $ 7,150
Basic earnings/(loss) per share (in dollars per share) $ 2.67 [4] $ 0.19 [4] $ 0.24 [4] $ (0.15) [4] $ (0.36) [4] $ (0.10) [4] $ 0.02 [4] $ (0.21) [4] $ 3.09 $ (0.65) $ 0.22
Diluted earnings/(loss) per share (in dollars per share) $ 2.49 [4] $ 0.19 [4] $ 0.24 [4] $ (0.15) [4] $ (0.36) [4] $ (0.10) [4] $ 0.02 [4] $ (0.21) [4] $ 3.00 [1],[2] $ (0.65) [1],[2] $ 0.22 [1],[2]
Antidilutive stock options not included in the calculation of diluted earnings per share                 256 1,731 699
[1] During 2012, we issued $126.5 million of 1.875% convertible senior notes convertible into shares of our common stock at a rate of 17.1985 shares per 1,000 principle amount. 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] 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] Due to the computation of earnings/(loss) per share, the sum of the quarterly amounts may not equal the full-year results.