Other Assets - Components of Other Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Identifiable intangible assets, net	$ 33,125	$ 15,712
Prepaid expenses	22,717	21,872
Prepaid income taxes	22,277	25,839
Deferred tax assets	21,956	12,695
Other financial receivables	19,444	11,275
Service fee receivables	12,903	13,708
Derivative instruments	6,828	718
Receivable from seller	5,388	8,605
Security deposits	2,837	2,368
Other	37,246	35,970
Total	$ 184,721	$ 148,762