Annual report pursuant to Section 13 and 15(d)

Share Based Compensation (Expense) (Details 1)

v2.4.1.9
Share Based Compensation (Expense) (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Share based compensation expense and related tax benefit      
Share-based compensation expense $ 43,666us-gaap_AllocatedShareBasedCompensationExpense $ 37,007us-gaap_AllocatedShareBasedCompensationExpense $ 27,873us-gaap_AllocatedShareBasedCompensationExpense
Tax (expense) benefit $ 14,779us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense $ 12,472us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense $ 9,298us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense