Business Combinations (Pro-Forma Information) (Details) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
Business Acquisition [Line Items] | ||
Revenue | $ 1,848,351 | $ 1,765,391 |
Net income | 140,468 | $ 146,091 |
Pro Forma | ||
Business Acquisition [Line Items] | ||
One-time acquisition costs | 1,800 | |
Increase amortization expense | 3,400 | |
Increase in interest expense | 7,600 | |
Increase in depreciation expense | $ 4,500 |