Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Basic And Diluted Earnings Per Share) (Details)

v2.4.1.9
Earnings Per Share (Basic And Diluted Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Net income:      
Net income $ 33,689us-gaap_NetIncomeLoss $ 24,182us-gaap_NetIncomeLoss $ 172,984us-gaap_NetIncomeLoss
Weighted average number of shares outstanding:      
Basic 52,573us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 53,160us-gaap_WeightedAverageNumberOfSharesOutstandingBasic  
Dilutive effect of stock-based compensation awards 1,187us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment 1,005us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment  
Diluted 53,760us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 54,165us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding  
Net income per share:      
Basic (usd per share) $ 0.64us-gaap_EarningsPerShareBasic $ 0.45us-gaap_EarningsPerShareBasic  
Diluted (usd per share) $ 0.63us-gaap_EarningsPerShareDiluted $ 0.45us-gaap_EarningsPerShareDiluted  
Unexercised employee stock options and stock appreciation rights and unvested restricted stock units excluded from the diluted EPS calculation because their effect would have been antidilutive 527us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 746us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount