Revenues and Income from Operations Related to Segment Within Reconciliation to Consolidated Amounts (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Revenue	$ 426,091	$ 386,521	$ 839,566	$ 732,079
Gross Profit	187,491	166,684	366,143	318,582
Income from operations	21,104	18,574	32,367	30,470
Unallocated Amounts [Member]
Segment Reporting Information [Line Items]
Revenue	1,260	6,008	2,211	25,068
Gross Profit	(10,841)	(8,359)	(22,294)	(10,522)
Income from operations	(78,186)	(70,441)	(159,383)	(144,273)
Clinical and Financial Solutions [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	286,674	282,254	567,129	553,697
Gross Profit	119,286	121,319	233,004	235,340
Income from operations	63,023	67,386	118,009	128,224
Population Health [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	59,736	54,026	118,798	109,081
Gross Profit	41,775	38,775	83,588	78,815
Income from operations	28,439	24,028	56,984	48,918
Netsmart [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	78,421	44,233	151,428	44,233
Gross Profit	37,271	14,949	71,845	14,949
Income from operations	$ 7,828	$ (2,399)	$ 16,757	$ (2,399)

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

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=63488584&loc=d3e20235-122688

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+ 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=63488584&loc=d3e20235-122688

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