Segment Information (Tables)
3 Months Ended
Mar. 31, 2014
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,
 
2014
 
2013
PBM:
 
 
 
Revenue
$
4,878,375

 
$
3,181,553

Cost of revenue
4,583,284

 
2,954,101

Gross profit
295,091

 
227,452

Total assets at March 31
8,392,454

 
7,177,351

HCIT:
 
 
 
Revenue
36,104

 
38,163

Cost of revenue
16,533

 
17,243

Gross profit
19,571

 
$
20,920

Total assets at March 31
402,019

 
119,443

Consolidated:
 
 
 
Revenue
4,914,479

 
3,219,716

Cost of revenue
4,599,817

 
2,971,344

Gross profit
314,662

 
248,372

Total assets at March 31
$
8,794,473

 
$
7,296,794