Concentration	12 Months Ended
Dec. 31, 2017
Concentration
Concentration	20. Concentration One customer, Memorial Hermann Health System, accounted for approximately 15%, 16% and 15% of total revenue in 2017, 2016 and 2015, respectively. The revenue is generated across all three of our reportable segments.

Concentration

12 Months Ended

Dec. 31, 2017

20. Concentration

One customer, Memorial Hermann Health System, accounted for approximately 15%, 16% and 15% of total revenue in 2017, 2016 and 2015, respectively. The revenue is generated across all three of our reportable segments.