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Segment and Geographical Information - Financial Performance of Reporting Segments (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($) segment | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of segments | segment | 2 |  |
Number of reportable segments | segment | 2 |  |
Revenues | $ 716,165 | $ 692,623 | $ 484,559
Cost of revenues | 394,077 | 378,823 | 236,629
Gross profit | 322,088 | 313,800 | 247,930
Operating expenses | 316,334 | 307,319 | 199,298
Income from operations | 5,754 | 6,481 | 48,632
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 716,165 | 692,623 | 484,559
Cost of revenues | 394,077 | 378,823 | 236,629
Gross profit | 322,088 | 313,800 | 247,930
Operating expenses | 235,435 | 223,354 | 138,342
Income from operations | 86,653 | 90,446 | 109,588
Operating Segments | Automation and Analytics |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 590,392 | 593,626 | 390,321
Cost of revenues | 308,443 | 310,967 | 171,943
Gross profit | 281,949 | 282,659 | 218,378
Operating expenses | 193,700 | 198,511 | 114,084
Income from operations | 88,249 | 84,148 | 104,294
Operating Segments | Medication Adherence |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 125,773 | 98,997 | 94,238
Cost of revenues | 85,634 | 67,856 | 64,686
Gross profit | 40,139 | 31,141 | 29,552
Operating expenses | 41,735 | 24,843 | 24,258
Income from operations | (1,596) | 6,298 | 5,294
Corporate, Non-Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating expenses | $ 80,899 | $ 83,965 | $ 60,956

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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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