|3 Months Ended|
Mar. 31, 2018
|Revenue from Contract with Customer [Abstract]|
|Disaggregation of Revenue||
The following table presents the Company’s operating revenues disaggregated by geographical region in which services are provided:
The following table presents the Company’s revenues earned by service line:
Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.
Reference 1: http://www.xbrl.org/2003/role/presentationRef