OTHER BORROWINGS - Components of Other Borrowings (Detail) - USD ($) $ in Thousands		Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Junior subordinated debentures due in 2034		$ 216,183	$ 226,492
Junior Subordinated Debentures Bearing Interest At Floating Rate Of Two Point Seventy Five [Member]
Debt Instrument [Line Items]
Junior subordinated debentures due in 2034		97,626	97,626
Junior Subordinated Debentures Bearing Interest At Floating Rate Of Two Point Fifty Percent [Member]
Debt Instrument [Line Items]
Junior subordinated debentures due in 2034	[1]	$ 118,557	$ 128,866

[1] (1) Refer to Note 13 - Non-Consolidated Variable Interest Entities and Servicing Assets-Trust Preferred securities for additional information about the Corporation's repurchase and cancellation of $10 million of trust preferred securities associated with these junior subordinated debentures.