Other Noninterest Income (Loss) and Other Noninterest Expense - Summary of Other Noninterest Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Income and Expenses [Abstract]
Fund management fees	$ 4,620	$ 3,722
Service-based fee income	2,092	2,106
Gains (losses) on revaluation of foreign currency instruments	2,491	(20,159)
Other	6,768	6,653
Total other noninterest income (loss)	$ 15,971	$ (7,678)	[1]

[1] Amounts for the three months ended March 31, 2015, have been revised to reflect the retrospective application of new accounting guidance adopted in the second quarter of 2015 related to our consolidated variable interest entities (ASU 2015-02).