Debt Outstanding Excluding Capital Leases (Detail) - USD ($) $ in Thousands	Jun. 30, 2017		Dec. 31, 2016
Debt Instrument [Line Items]
Principal Balance	$ 1,395,874		$ 1,386,813
Unamortized Discount and Debt Issuance Costs	65,546		74,433
Net Carrying Amount	1,330,328		1,312,380
Principal Balance, Current	21,875		15,638
Unamortized Discount and Debt Issuance Costs, Current	462		480
Net Carrying Amount, Current	21,413		15,158
Principal Balance, Noncurrent	1,369,648		1,366,824
Unamortized Discount and Debt Issuance Costs, Noncurrent	63,193		72,053
Net Carrying Amount, Noncurrent	1,306,455		1,294,771
Netsmart [Member]
Debt Instrument [Line Items]
Principal Balance, Current	4,351		4,351
Unamortized Discount and Debt Issuance Costs, Current	1,891		1,900
Net Carrying Amount, Current	2,460		2,451
1.25% Cash Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Principal Balance	345,000	[1]	345,000
Unamortized Discount and Debt Issuance Costs	42,662		49,186
Net Carrying Amount	302,338		295,814
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Principal Balance	453,125		441,875
Unamortized Discount and Debt Issuance Costs	4,022		4,691
Net Carrying Amount	449,103		437,184
Netsmart Non-Recourse Debt First Lien Term Loan [Member]
Debt Instrument [Line Items]
Principal Balance	430,749		432,925
Unamortized Discount and Debt Issuance Costs	10,703		11,655
Net Carrying Amount	420,046		421,270
Netsmart Non-Recourse Debt Second Lien Term Loan [Member]
Debt Instrument [Line Items]
Principal Balance	167,000		167,000
Unamortized Discount and Debt Issuance Costs	8,159		8,901
Net Carrying Amount	158,841		158,099
Other Debt [Member]
Debt Instrument [Line Items]
Principal Balance	0		13
Unamortized Discount and Debt Issuance Costs	0		0
Net Carrying Amount	$ 0		$ 13

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