Other Noninterest Income (Loss) and Other Noninterest Expense - Summary of Other Noninterest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Income and Expenses [Abstract]
Lending and other client related processing costs	$ 4,295	$ 3,549
Telephone	2,233	1,959
Data processing services	1,829	1,833
Dues and publications	802	585
Postage and supplies	790	765
Other	4,844	4,831
Total other noninterest expense	$ 14,793	$ 13,522	[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).