Supplemental Disclosures (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$ 137,167	$ 111,999	$ 174,243
Restricted cash	10,681	12,668	$ 10,552
Total cash, cash equivalents and restricted cash	147,848	124,667
Supplemental non-cash information:
Accretion of redemption preference on redeemable convertible non-controlling interest - discontinued operation	0	12,149
Contribution of assets in exchange for equity interest	0	4,000
Netsmart [Member]
Supplemental non-cash information:
Accretion of redemption preference on redeemable convertible non-controlling interest - discontinued operation	$ 0	$ 12,149