Segment and Geographical Information - Financial Performance of Reporting Segments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting [Abstract]
Number of segments | segment	2
Number of reportable segments | segment	2
Segment Reporting Information [Line Items]
Revenues	$ 692,623	$ 484,559	$ 440,900
Cost of revenues	378,823	236,629	207,040
Gross profit	313,800	247,930	233,860
Operating expenses	307,319	199,298	184,277
Income from operations	6,481	48,632	49,583
Operating Segments
Segment Reporting Information [Line Items]
Revenues	692,623	484,559	440,900
Cost of revenues	378,823	236,629	207,040
Gross profit	313,800	247,930	233,860
Operating expenses	223,354	138,342	126,515
Income from operations	90,446	109,588	107,345
Operating Segments | Automation and Analytics
Segment Reporting Information [Line Items]
Revenues	593,626	390,321	354,095
Cost of revenues	310,967	171,943	151,327
Gross profit	282,659	218,378	202,768
Operating expenses	198,511	114,084	105,929
Income from operations	84,148	104,294	96,839
Operating Segments | Medication Adherence
Segment Reporting Information [Line Items]
Revenues	98,997	94,238	86,805
Cost of revenues	67,856	64,686	55,713
Gross profit	31,141	29,552	31,092
Operating expenses	24,843	24,258	20,586
Income from operations	6,298	5,294	10,506
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Operating expenses	$ 83,965	$ 60,956	$ 57,762