Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Income Taxes          
Effective tax rate (as a percent) 25.20% 33.40% 23.10% 33.80%  
Tax benefit related to share-based compensation $ 545 $ 1,619 $ 3,140 $ 2,634  
Net deferred tax liability 149,900   149,900    
Net long-term deferred tax assets 17,634   17,634   $ 18,129
Net long-term deferred tax liabilities $ 167,508   $ 167,508   $ 132,840