Summary of Future Debt Payments (Detail) - USD ($) $ in Thousands		Dec. 31, 2016		Dec. 31, 2015	Jun. 18, 2013
Debt Instrument [Line Items]
Total		$ 1,386,813		$ 692,058
2017		19,989
2018		32,476
2019		44,976
2020		706,851
2021		4,351
Thereafter		578,170
1.25% Cash Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Total		345,000	[1]	345,000	$ 345,000
2017	[1]	0
2018	[1]	0
2019	[1]	0
2020	[1]	345,000
2021	[1]	0
Thereafter	[1]	0
Term Loan [Member]
Debt Instrument [Line Items]
Total	[2]	234,375
2017	[2]	15,625
2018	[2]	28,125
2019	[2]	40,625
2020	[2]	150,000
2021	[2]	0
Thereafter	[2]	0
Netsmart First Lien Term Loan [Member]
Debt Instrument [Line Items]
Total	[2]	432,925
2017	[2]	4,351
2018	[2]	4,351
2019	[2]	4,351
2020	[2]	4,351
2021	[2]	4,351
Thereafter	[2]	411,170
Netsmart Second Lien Term Loan [Member]
Debt Instrument [Line Items]
Total	[2]	167,000
2017	[2]	0
2018	[2]	0
2019	[2]	0
2020	[2]	0
2021	[2]	0
Thereafter	[2]	167,000
Other Debt [Member]
Debt Instrument [Line Items]
Total		13		$ 183
2017		13
2018		0
2019		0
2020		0
2021		0
Thereafter		0
Revolving Facility [Member]
Debt Instrument [Line Items]
Total		207,500
2017		0
2018		0
2019		0
2020		207,500
2021		0
Thereafter		$ 0

[1] Assumes no cash conversions of the 1.25% Notes prior to their maturity on July 1, 2020.

[2] Assumes no additional borrowings after December 31, 2016 and that all drawn amounts are repaid upon maturity.