General - Contingent Consideration (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Feb. 29, 2016	Dec. 31, 2015	Apr. 01, 2015	Jul. 01, 2014	Apr. 30, 2014
Fair value measurement of contingent consideration
Fair value of the short term contingent consideration					$ 594		$ 91,623
Long-term contingent consideration					3,214		803
Fair value of the contingent consideration	$ 3,808		$ 92,426		$ 3,808		92,426
Liability for contingent consideration
Balance as of beginning of period			92,426
Changes in fair value	463	$ 2,567	197	$ 17,536
Net payments			(91,059)
Balance as of end of period	3,808		3,808
Direct service costs and other operating expenses
Liability for contingent consideration
Changes in fair value	$ 500		200
CDMI
Contingent consideration disclosures
Maximum potential contingent payments										$ 165,000
Fair value measurement of contingent consideration
Estimated undiscounted future contingent payments							90,100
Cobalt
Contingent consideration disclosures
Maximum potential contingent payments									$ 6,000
TMG
Contingent consideration disclosures
Maximum potential contingent payments						$ 15,000
Liability for contingent consideration
Acquisition			$ 2,244
4D Pharmacy Management Systems, Inc.
Contingent consideration disclosures
Maximum potential contingent payments								$ 30,000
Fair value measurement of contingent consideration
Estimated undiscounted future contingent payments							$ 1,000