Segment Information - Components of Adjusted Capital Expenditures (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
Segment Reporting [Abstract] | ||||
Additions to property and equipment | $ 66,051 | $ 56,812 | $ 127,963 | $ 106,470 |
Capitalized implementation costs | 15,234 | 9,944 | 29,561 | 17,597 |
Adjusted Capital Expenditures | $ 81,285 | $ 66,756 | $ 157,524 | $ 124,067 |