Segment Information - Financial Performance of Reporting Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenues	$ 172,907	$ 112,788	$ 343,911	$ 229,009
Cost of revenues	94,890	55,326	185,949	109,862
Gross profit	78,017	57,462	157,962	119,147
Operating expenses	78,135	45,038	156,228	96,344
(Loss) income from operations	(118)	12,424	1,734	22,803
Revenues	172,907	112,788	343,911	229,009
Property and equipment, net	40,503		40,503		$ 32,309
United States
Segment Reporting Information [Line Items]
Revenues	145,988	95,147	289,481	192,970
Property and equipment, net	36,727		36,727		29,506
Rest of world
Segment Reporting Information [Line Items]
Revenues	26,919	17,641	54,430	36,039
Property and equipment, net	3,776		3,776		$ 2,803
Operating segments
Segment Reporting Information [Line Items]
Revenues	172,907	112,788	343,911	229,009
Cost of revenues	94,890	55,326	185,949	109,862
Gross profit	78,017	57,462	157,962	119,147
Operating expenses	55,551	31,888	113,367	66,818
(Loss) income from operations	22,466	25,574	44,595	52,329
Operating segments | Automation and Analytics
Segment Reporting Information [Line Items]
Revenues	148,660	88,701	297,605	181,480
Cost of revenues	78,366	39,403	155,573	78,255
Gross profit	70,294	49,298	142,032	103,225
Operating expenses	49,780	25,978	101,985	54,567
(Loss) income from operations	20,514	23,320	40,047	48,658
Operating segments | Medication Adherence
Segment Reporting Information [Line Items]
Revenues	24,247	24,087	46,306	47,529
Cost of revenues	16,524	15,923	30,376	31,607
Gross profit	7,723	8,164	15,930	15,922
Operating expenses	5,771	5,910	11,382	12,251
(Loss) income from operations	1,952	2,254	4,548	3,671
Corporate cost
Segment Reporting Information [Line Items]
Operating expenses	$ 22,584	$ 13,150	$ 42,861	$ 29,526