Other Assets - Components of Other Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Identifiable intangible assets, net	$ 35,691	$ 15,712
Prepaid expenses	21,768	21,872
Deferred tax assets	15,334	12,695
Other financial receivables	15,076	11,275
Service fee receivables	13,634	13,708
Prepaid income taxes	7,544	25,839
Receivable from seller	5,388	8,605
Derivative instruments	4,436	718
Security deposits	2,537	2,368
Other	36,125	35,970
Total other assets	$ 157,533	$ 148,762