Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Identifiable intangible assets, net	$ 60,581	$ 75,736
Other financial receivables	47,363	37,861
Service fee receivables	28,035	25,609
Assets held for sale	26,664	18,741
Prepaid expenses	24,989	27,606
Deferred tax assets	24,910	18,773
Security deposits	2,667	3,451
Derivative instruments	2,023	5,834
Funds held in trust	0	28,199
Prepaid income taxes	0	27,917
Other	39,770	33,001
Total	$ 257,002	$ 302,728