Annual report pursuant to Section 13 and 15(d)

Earnings (Loss) Per Share (Details)

v2.4.1.9
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, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Basic and Diluted (Loss)/Earnings Per Common Share                      
Basic weighted average number of shares outstanding                 39,017us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 36,105us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 34,057us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of dilutive securities:                      
Convertible debt                 2,176us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities 2,176us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities 612us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities
Stock options and unvested restricted stock                 421us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 520us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 503us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Diluted average shares outstanding                 41,614us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 38,801us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 35,172us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Net earnings as reported $ 49,208,000us-gaap_NetIncomeLoss $ 32,577,000us-gaap_NetIncomeLoss $ 35,079,000us-gaap_NetIncomeLoss $ 25,377,000us-gaap_NetIncomeLoss $ 46,089,000us-gaap_NetIncomeLoss $ 38,191,000us-gaap_NetIncomeLoss $ 28,143,000us-gaap_NetIncomeLoss $ 12,041,000us-gaap_NetIncomeLoss $ 142,241,000us-gaap_NetIncomeLoss $ 124,464,000us-gaap_NetIncomeLoss $ 105,163,000us-gaap_NetIncomeLoss
Interest attributable to Convertible Senior Notes, net of income taxes                 1,573,000us-gaap_InterestOnConvertibleDebtNetOfTax 1,454,000us-gaap_InterestOnConvertibleDebtNetOfTax 417,660us-gaap_InterestOnConvertibleDebtNetOfTax
Net Income/(Loss) for earnings/(loss) per share                 $ 143,814,000us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted $ 125,918,000us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted $ 105,581,000us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted
Basic earnings/(loss) per share (in dollars per share) $ 1.26us-gaap_EarningsPerShareBasic [1] $ 0.83us-gaap_EarningsPerShareBasic [1] $ 0.90us-gaap_EarningsPerShareBasic [1] $ 0.66us-gaap_EarningsPerShareBasic [1] $ 1.27us-gaap_EarningsPerShareBasic [1] $ 1.05us-gaap_EarningsPerShareBasic [1] $ 0.78us-gaap_EarningsPerShareBasic [1] $ 0.34us-gaap_EarningsPerShareBasic [1] $ 3.65us-gaap_EarningsPerShareBasic $ 3.45us-gaap_EarningsPerShareBasic $ 3.09us-gaap_EarningsPerShareBasic
Diluted earnings/(loss) per share (in dollars per share) $ 1.19us-gaap_EarningsPerShareDiluted [1] $ 0.79us-gaap_EarningsPerShareDiluted [1] $ 0.85us-gaap_EarningsPerShareDiluted [1] $ 0.62us-gaap_EarningsPerShareDiluted [1] $ 1.19us-gaap_EarningsPerShareDiluted [1] $ 0.99us-gaap_EarningsPerShareDiluted [1] $ 0.74us-gaap_EarningsPerShareDiluted [1] $ 0.32us-gaap_EarningsPerShareDiluted [1] $ 3.46us-gaap_EarningsPerShareDiluted $ 3.25us-gaap_EarningsPerShareDiluted $ 3.00us-gaap_EarningsPerShareDiluted [2]
Antidilutive stock options not included in the calculation of diluted earnings per share                 26us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 7us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 256us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
[1] Due to the computation of earnings per share, the sum of the quarterly amounts may not equal the full-year results.
[2] 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.