Segment Information (Tables)
3 Months Ended
Mar. 31, 2015
Segment Reporting [Abstract]  
Schedule of financial information by segment
The Company reports in two operating segments: PBM and HCIT. The Company evaluates segment performance based upon revenue and gross profit. Financial information by segment is presented below (in thousands):
 
Three Months Ended March 31,
 
2015
 
2014
PBM:
 
 
 
Revenue
$
5,941,613

 
$
4,878,375

Cost of revenue
5,583,964

 
4,583,284

Gross profit
357,649

 
295,091

Total assets at March 31
9,328,420

 
8,392,454

HCIT:
 
 
 
Revenue
37,647

 
36,104

Cost of revenue
16,542

 
16,533

Gross profit
21,105

 
$
19,571

Total assets at March 31
129,951

 
402,019

Consolidated:
 
 
 
Revenue
5,979,260

 
4,914,479

Cost of revenue
5,600,506

 
4,599,817

Gross profit
378,754

 
314,662

Total assets at March 31
$
9,458,371

 
$
8,794,473