Segment Information - Financial Performance of Reporting Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Revenues	$ 116,221us-gaap_SalesRevenueNet	$ 101,764us-gaap_SalesRevenueNet
Cost of revenues	54,536us-gaap_CostOfGoodsAndServicesSold	47,269us-gaap_CostOfGoodsAndServicesSold
Gross profit	61,685us-gaap_GrossProfit	54,495us-gaap_GrossProfit
Operating expenses	51,306us-gaap_OperatingExpenses	44,541us-gaap_OperatingExpenses
Income from operations	10,379us-gaap_OperatingIncomeLoss	9,954us-gaap_OperatingIncomeLoss
Operating segments [Member]
Segment Reporting Information [Line Items]
Revenues	116,221	101,764
Cost of revenues	54,536	47,269
Gross profit	61,685	54,495
Operating expenses	34,930	29,753
Income from operations	26,755	24,742
Operating segments [Member] \| Automation and Analytics [Member]
Segment Reporting Information [Line Items]
Revenues	92,779	81,499
Cost of revenues	38,852	34,940
Gross profit	53,927	46,559
Operating expenses	28,589	25,102
Income from operations	25,338	21,457
Operating segments [Member] \| Medication Adherence [Member]
Segment Reporting Information [Line Items]
Revenues	23,442	20,265
Cost of revenues	15,684	12,329
Gross profit	7,758	7,936
Operating expenses	6,341	4,651
Income from operations	1,417	3,285
Corporate cost [Member]
Segment Reporting Information [Line Items]
Operating expenses	$ 16,376	$ 14,788

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.

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=26872669&loc=d3e20235-122688

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ 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 210.5-03.1,2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ 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 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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