LOAN PORTFOLIO- Carrying Value of Purchased Credit Impaired Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2016		Dec. 31, 2015		Mar. 31, 2015	Dec. 31, 2014
Financing Receivable Impaired [Line Items]
Purchased Credit Impaired Loans	$ 172,332		$ 173,913		$ 181,114	$ 102,604
Allowance for loan losses Purchased Credit Impaired	(4,568)		(3,962)		0	$ 0
Purchased Credit Impaired Loans, Net	167,764		169,951		$ 181,114
Residential Mortgage Loans [Member]
Financing Receivable Impaired [Line Items]
Purchased Credit Impaired Loans	169,190	[1]	170,766	[2]
Commercial Mortgage Loans [Member]
Financing Receivable Impaired [Line Items]
Purchased Credit Impaired Loans	$ 3,142	[1]	$ 3,147	[2]

[1] According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage, commercial mortgage, and construction loans are considered past due when the borrower is in arrears two or more monthly payments. FHA/VA government-guaranteed loans, other residential mortgage loans, commercial mortgage loans, land loans, construction-commercial and construction-residential loans past due 30-59 days as of March 31, 2016 amounted to $10.0 million, $155.9 million, $74.8 million, $0.5 million, $5.2 million and $0.7 million, respectively.

[2] According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage, commercial mortgage, and construction loans are considered past due when the borrower is in arrears two or more monthly payments. FHA/VA government guaranteed loans, other residential mortgage loans, commercial mortgage loans, land loans and construction-residential loans past due 30-59 days as of December 31, 2015 amounted to $11.0 million, $162.9 million, $38.6 million, $5.7 million and $0.8 million, respectively.