Stock-Based Compensation Expense (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	$ 11,151	$ 10,660	$ 19,987	$ 21,061
Netsmart [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense (benefit)	516	1,426	(3,028)	1,426
Cost of revenue [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	1,981	2,199	4,678	4,858
Cost of revenue [Member] | Netsmart [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense (benefit)	23	62	(93)	62
Cost of revenue [Member] | Software delivery, Support and Maintenance [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	988	1,061	2,113	2,230
Cost of revenue [Member] | Software delivery, Support and Maintenance [Member] | Netsmart [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense (benefit)	10	25	(25)	25
Cost of revenue [Member] | Client services [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	993	1,138	2,565	2,628
Cost of revenue [Member] | Client services [Member] | Netsmart [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense (benefit)	13	37	(68)	37
Selling, General and Administrative Expenses [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	7,050	6,342	10,600	11,508
Selling, General and Administrative Expenses [Member] | Netsmart [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense (benefit)	478	1,328	(2,859)	1,328
Research and development [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	2,120	2,119	4,709	4,695
Research and development [Member] | Netsmart [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense (benefit)	$ 15	$ 36	$ (76)	$ 36