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OTHER BORROWINGS - Components of Other Borrowings (Detail) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Junior subordinated debentures due in 2034		$ 208,635	$ 216,187
Junior Subordinated Debentures Bearing Interest At Floating Rate Of Two Point Seventy Five [Member]
Debt Instrument [Line Items]
Junior subordinated debentures due in 2034	[1]	90,078	97,630
Junior Subordinated Debentures Bearing Interest At Floating Rate Of Two Point Fifty Percent [Member]
Debt Instrument [Line Items]
Junior subordinated debentures due in 2034		$ 118,557	$ 118,557
[1] Refer to Note 16 - "Non-Consolidated Variable Interest Entities and Servicing Assets - Trust Preferred Securities" for additional information about the Corporation's repurchase and cancellation of $7.3 million of trust-preferred securities associated with these junior subordinated debentures.

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No definition available.

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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