Segment Information - Financial Performance of Reporting Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Property and equipment, net	$ 42,208		$ 32,309
Revenues	171,004	$ 116,221
Revenues	171,004	116,221
Cost of revenues	91,059	54,536
Gross profit	79,945	61,685
Operating expenses	78,093	51,306
Income from operations	1,852	10,379
Operating segments
Segment Reporting Information [Line Items]
Revenues	171,004	116,221
Cost of revenues	91,059	54,536
Gross profit	79,945	61,685
Operating expenses	57,816	34,930
Income from operations	22,129	26,755
Operating segments | Automation and Analytics
Segment Reporting Information [Line Items]
Revenues	148,945	92,779
Cost of revenues	77,207	38,852
Gross profit	71,738	53,927
Operating expenses	52,205	28,589
Income from operations	19,533	25,338
Operating segments | Medication Adherence
Segment Reporting Information [Line Items]
Revenues	22,059	23,442
Cost of revenues	13,852	15,684
Gross profit	8,207	7,758
Operating expenses	5,611	6,341
Income from operations	2,596	1,417
Corporate cost
Segment Reporting Information [Line Items]
Operating expenses	20,277	16,376
United States
Segment Reporting Information [Line Items]
Property and equipment, net	38,880		29,506
Revenues	143,493	97,823
Rest of world
Segment Reporting Information [Line Items]
Property and equipment, net	3,328		$ 2,803
Revenues	$ 27,511	$ 18,398