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Goodwill and Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Goodwill [Roll Forward] |  |
Beginning balance | $ 327,724 | $ 147,906
Additions | 6,513 | 184,431
Adjustments | 3,514 | (4,613)
Ending balance | 337,751 | 327,724
Automation and Analytics |  |
Goodwill [Roll Forward] |  |
Beginning balance | 215,082 | 54,316
Additions | 3,113 | 163,599
Adjustments | 2,656 | (2,833)
Ending balance | 220,851 | 215,082
Medication Adherence |  |
Goodwill [Roll Forward] |  |
Beginning balance | 112,642 | 93,590
Additions | 3,400 | 20,832
Adjustments | 858 | (1,780)
Ending balance | 116,900 | $ 112,642
Accounts Receivable | Medication Adherence |  |
Goodwill [Roll Forward] |  |
Goodwill, purchase accounting adjustments | 100 |
Other Noncurrent Assets | Medication Adherence |  |
Goodwill [Roll Forward] |  |
Goodwill, purchase accounting adjustments | 700 |
Other Liabilities | Medication Adherence |  |
Goodwill [Roll Forward] |  |
Goodwill, purchase accounting adjustments | $ 2,600 |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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